Abstract: The invention non-direct vent (one pipe) or direct vent (two pipe) fuel fired appliance vent terminations spaced apart to accommodate the inward flow of combustion air and/or the outwardly flow of exhaust flue gas of a fuel fired appliance. The vent termination ends are capable of engaging the terminal ends of a variety of different size exhaust conduits including fitting sockets of a conduit fitting. The vent pipe termination can include in some aspects a vent pipe termination kit which may include, but not limited to; a vent termination main embodiment, mounting plate, screws, connector elements, threaded nuts, connector element cover, protection shield, intake screen, 90 degree elbows, sloped vent fitting, T fittings, wall anchors, decals or labels, escutcheon covers, insulating materials, caulking or other similar components.

Abstract: A fresh-air cooling system and methods of cooling a building structure with the same are provided. The system has an exterior interface assembly, a damper, a register, a duct, and a motorized fan. The exterior interface assembly is connected to the register by the duct and provides a flow path for air outside the building to enter the duct. The motorized fan is disposed in an attic of the building structure and pulls air into the attic from a living space to create a negative static pressure in the living space. The damper is positioned along the flow path from the exterior interface assembly to the living space and opens to allow air outside the building structure to enter the living space in response to motorized fan creating in the living space a negative static pressure that exceeds the cracking pressure of the damper. The cracking pressure of the damper can be adjusted to control the flow rate of outside air through the damper.

Abstract: The invention non-direct vent (one pipe) or direct vent (two pipe) fuel fired appliance vent terminations spaced apart to accommodate the inward flow of combustion air and/or the outwardly flow of exhaust flue gas of a fuel fired appliance. The vent termination ends are capable of engaging the terminal ends of a variety of different size exhaust conduits including fitting sockets of a conduit fitting. The vent pipe termination can include in some aspects a vent pipe termination kit which may include, but not limited to; a vent termination main embodiment, mounting plate, screws, connector elements, threaded nuts, connector element cover, protection shield, intake screen, 90 degree elbows, sloped vent fitting, T fittings, wall anchors, decals or labels, escutcheon covers, insulating materials, caulking or other similar components.

Abstract: This device is presented as a bulkhead doorway attached to a wall structure, such as a sunroom or an enclosed pool; this device connects the interior space to the outside; and with this device a user can completely clean, rinse and clear the floor surface of the enclosure.

Abstract: A fresh-air cooling system and methods of cooling a building structure with the same are provided. The system has an exterior interface assembly, a damper, a register, a duct, and a motorized fan. The exterior interface assembly is connected to the register by the duct and provides a flow path for air outside the building to enter the duct. The motorized fan is disposed in an attic of the building structure and pulls air into the attic from a living space to create a negative static pressure in the living space. The damper is positioned along the flow path from the exterior interface assembly to the living space and opens to allow air outside the building structure to enter the living space in response to motorized fan creating in the living space a negative static pressure that exceeds the cracking pressure of the damper. The cracking pressure of the damper can be adjusted to control the flow rate of outside air through the damper.

Abstract: Disclosed is a spacer for a disposable formwork for the construction of a wall, with first and second panels. The spacer mutually couples the first and second panels at a certain distance one from the other. The spacer includes: a first connecting portion coupled, in use, with the first panel; a second connecting portion opposite the first and coupled, in use, with the second panel; and at least one pipe with at least one lateral opening communicating, in use, outside the formwork. In the pipe a through hole communicates, in use, with the formwork interior, allowing air passage from the outside towards the inside part and liquid outflow from inside towards the outside of the formwork. Also disclosed is a disposable formwork for the construction of a wall, including two panels and at least one such spacer, arranged between the two panels and coupling the two panels.

Abstract: Systems and methods are described for a screen assembly for gas-air mixers in HVAC systems, such as for furnaces. A screen assembly can comprise a mesh screen, a housing, and a pressure tap. The mesh screen can allow for the intake of an air supply while also blocking unwanted foreign matter such as dust or leaves. The housing can receive the air supply and direct it into a gas-air mixer or other component. The pressure tap can be coupled to a gas valve or regulator in order to modulate the flow of gas when air flow is restricted.

Abstract: An air ventilating unit that assists in exhausting air from a building. The unit has a housing providing an opening to the exterior of the building, the housing having moveable louvers pivotally mounted in the housing with seals between the louvers and between the louvers and the housing to minimize outside air leakage when the louvers are closed. The louvers are designed to prevent them from flipping over and becoming jammed when in an open position. Once the louvers are fully open, all the louvers will stay open with minimal fan power.

Abstract: According to one embodiment, a flood vent includes a frame configured to form a fluid passageway through an opening in a structure. The flood vent further includes a panel configured to be coupled to the frame in the fluid passageway so as to at least partially block the fluid passageway through the opening in the structure. The flood vent also includes one or more connectors configured to couple the panel to the frame. The one or more connectors are further configured to uncouple the panel from the frame when 0.5-5.0 pounds per square inch (PSI) of pressure is applied to a portion of the panel by one or more of a fluid or an object carried by the fluid, so as to reduce an amount of blockage of the fluid passageway provided by the panel.

Abstract: An exhaust apparatus provides a housing with at least one exhaust compartment disposed within the housing, and at least one draft damper repositionable to operate at orientations of about 0°, 90°, 180° and 270° with respect to a level plane of an exterior bottom surface of the housing.

Abstract: A modular building panel and integrated duct system including at least one modular building panel. The modular building panel includes a panel frame defining a longitudinal, a transverse width, and a transverse height; first and second ducts including therein duct stiffeners being truss or zig-zag shaped; and a ribbed joist spanning between the first duct to the second duct along the transverse width. The modular building panel may be connected to a like modular building panel.

Abstract: A vent includes an outer element including an outer perforated area having at least one perforation and an inner element having at least one perforation and a peripheral portion. The outer element and the inner element are separated by a distance to define a plenum between the outer element and the inner element.

Abstract: A foundation vent assembly for a masonry foundation wall includes a metal frame mounted in an opening registering with a crawl space area. The frame orients and supports a series of spaced vertical grill blocks matching the foundation masonry and integrated with the surrounding mortar joints, thereby providing a continuous appealing exterior appearance. The spaces between the grill blocks register with ventilation slots in the rear of the frame. The ventilations slots are covered by a screen mesh to prevent pest infiltration, and optionally covered with a pivoting damper for selective opening and closing, having a rear wall covering the opening with spaced screen vents. The grill blocks are aligned by tabs on upper and lower flange walls between the vents and provide for extension of the foundation mortar joints thereby providing a consistent overall façade.

Abstract: A pressure equalization device adapted to be operatively connected to an enclosure, the device including an air passage which, when the device is so connected to the enclosure, provides a fluid communication between the interior of the enclosure and atmosphere, the air passage containing a barrier wall comprising an air permeable membrane forming a micro-particulate filter.

Abstract: An apparatus for providing ventilation in a lower level of a building and for preventing mold and mildew from building up in an interior portion of such building while also preventing entrance of small unwanted animals. The apparatus comprises a frame member having each of a first predetermined shape and a first predetermined size and formed of a first predetermined material. A screen member is engageable with the frame member for attachment thereto, such screen member having each of a second predetermined shape and a second predetermined size and being formed of a second predetermined material. The apparatus is secured to the structure by one of masonry screws or is secured in new construction with bricks and brick mortar.

Abstract: A vent assembly for attachment to a fluid discharge conduit of the type connected to a clothes dryer, room exhaust fan, or the like is adapted to reduce or prevent the trapping of dirt or lint as well as flapping or vibration of the door in windy conditions. A mount having an opening is received on the conduit and a door is pivotally received by the mount. The door is operable for displacement with respect to the opening between an open position and a closed position when engaged by a fluid, such as air from a clothes dryer, flowing through the discharge conduit. A hood is pivotally mounted over the door and mount opening, and is operable for displacement with respect to the mount when engaged by the door and/or by fluid flowing through the discharge conduit.

Abstract: A foundation vent comprising a front frame and resiliently-flexible clips with tabs at their ends. The foundation vent can be quickly installed within a foundation opening by flexing the clips, placing them into the opening, and pushing the front frame until it seats against the exterior of a foundation wall. At this point, the tabs of the clips will have protruded past the interior face of the foundation wall allowing the clips to return to their unflexed state and causing the tabs to secure against the interior face of the foundation wall.

Abstract: A security grill for a security institution has an air inlet face, an air outlet face, and zigzag channels extending from a point adjacent the inlet face toward the outlet face. The zigzag channels are defined by slats which are bent at least twice in alternating directions. The zigzag channels are divided into segments each having a cross-sectional width. The segments adjacent the air outlet face have a cross-sectional width less than any of the other segments along the channel. The slats are bent at certain angles which are larger than those of conventional security grills. Corners are created along each slat as a result of bending the slats in alternating directions. The corners are rounded.

Abstract: The present invention is concerned with a wall vent for particular use in a cavity wall of a timber frame building, the vent comprising a tubular body having a circumferential flange at one end and a vented or meshed cover across said end, the flange being disposed at an angle to the body such that when the flange is seated flush against the outer surface of the cavity wall the tubular body slopes upwardly into the cavity to prevent the migration of rain or the like through the vent into the cavity.

Abstract: An air exhaust box, for mounting in an exterior building wall and connecting to at least one exhaust duct, includes: a housing having side walls, a rear wall and a front exhaust opening; the front opening having a mounting flange surrounding a periphery of the opening and extending outwardly from the side walls; the rear wall having an inlet opening greater than a predetermined maximum dimension; each of the side walls being joined to the rear wall at an angle less than 90 degrees; and a duct adapter having a cover removably mountable to the rear wall with removable fasteners, the cover having an outer dimension larger than said maximum dimension of the inlet opening and a rearwardly projecting duct sleeve with an inner opening of size between said maximum dimension and a minimum dimension.

Abstract: The replaceable foundation vent has a mounting frame and a plurality of vent components, including a screen, ventilation plate, and a slider. The ventilation components are removably attachable to the mounting frame using fasteners. The mounting frame has a built in lintel, the entire frame being adapted for permanent mounting in an opening in a block, brick or frame foundation wall. Overhanging portions of the frame lintel rest atop foundation wall members laterally disposed on either side of the frame. Additional foundation wall members can be disposed on top of the lintel to seal off the initial top opening. By releasing/removing the fasteners, the vent components can easily be removed from the mounting frame for repairs to the vent when necessary.

Abstract: InsulVent, the insulated foundation vent, is a crawl-space foundation vent that is designed to open from the exterior as a door. This allows the homeowner to easily open the vent to install insulation during cold weather and remove it during warm weather. The vent is unique because no other foundation vent is designed to open and close from the outside as a door. In addition to a removeable insulation block, the varmint screen is also removeable and replaceable. The door is designed to operate without hinges; however, a hinged version can easily be adapted.

Abstract: A portable outdoor enclosure protects occupants from at least some elements of nature and includes a wall panel forming an outer wall of the enclosure. The wall panel has an opening formed of sufficient size to allow an air conditioning unit to be inserted through the opening in the flexible material wall panel. A sleeve of flexible material is connected to the wall panel and extends in at least one of an inwardly direction and an outwardly direction. The sleeve includes at least one outer peripheral end spaced from the side wall capable of being snugly engaged with an external surface of an air conditioning unit to be installed through the sleeve. At least one flap can be provided for covering the opening through the wall panel when the air conditioning unit is not installed.

Abstract: A trickle vent such as might be used in association with commercial windows is formed from PVC tubing in two convoluted paths. One or more expansion chambers are provided at turns or directional changes within the tubing which reduce or eliminate noise transmission through the vent. Where a plurality of expansion chambers are used, each chamber may be of different length to dampen a different portion of the acoustic spectrum. In a preferred embodiment, the expansion chambers are filled with an acoustic-type foam, and the ends are not completely sealed. The tubing preferably bridges two extrusions that form a supporting housing for the vent, and by using two separate extrusions bridged by the tubing, both thermal and acoustic isolation are maintained.

Abstract: A louver module includes a louver module body that extends in a length-wise direction, a width-wise direction and a height-wise direction such that the length-wise direction, the width wise-direction and the height wise direction are oriented perpendicularly relative to one another. The louver module body has a plurality of air passageways extending through the louver module body generally in the width-wise direction. Each one of the plurality of air passageways has a serpentine configuration.

Abstract: A security module for use with a ventilation grating comprising a body, a base with a planar surface for attachment to the grating, and an outer wall extending from the base. The body has inner passageways extending from the base to the outer wall, the first portion of which extends from the base in a direction perpendicular to the base, and the second portion of which extends from the outer wall to intersect perpendicularly with the first portion within the body. The security module, when attached to a ventilation grating, prevents threading a rope-like material, through the grating, and using the make-shift rope to commit suicide by hanging, and is therefore particularly suitable for use in penal institutions, hospitals and mental health facilities.

Abstract: An improved diffuser connectable to a duct of a ventilation system has a diffuser body, a collar extending outwardly away from the diffuser body, and a conduit slideably mounted in the collar. The conduit is slideably extendable from a retracted configuration, wherein substantially all of the conduit is enclosed in the diffuser body and the collar, into at least one extended position wherein at least a portion of the conduit is extended out of the retracted configuration away from the diffuser body and out of the collar for connection to the duct. Thus, the diffuser may be compactly stored for transport in the retracted position and then extended for attachment to the duct in the extended configuration. A retaining member on the conduit prevents the conduit from being involuntarily retracted back into the retracted configuration. A conduit for attachment to a diffuser is also provided.

Abstract: A removable ventilator is equipped to hold an air filter, the ventilator being designed for placement in a building foundation, for example between concrete blocks. The front of the ventilator faces away from the building when the ventilator is installed. The rear of the ventilator faces into the building when the ventilator is installed. At least one securing device is located at the rear of the ventilator, for securing the air filter to the rear. At least one manual handling feature is located at the front of the ventilator, for removing the ventilator from between the concrete blocks.

Abstract: A vent assembly for a crawl space type vent opening in the foundation wall of a building has a front frame engaging the outer face of the wall around the opening, swappable venting plates for the front frame, and a rear frame engaging the inner face of the wall in the crawl space and connected under tension through the opening to the front frame. A first form of the vent can be installed axially into the vent opening from the outside of the building to replace an existing vent in a finished wall. A second form of the vent is installed vertically into the vent opening in the wall before the opening has been capped, as part of new construction.

Abstract: A vent assembly for a crawl space type vent opening in the foundation wall of a building has a front frame engaging the outer face of the wall around the opening, swappable venting plates for the front frame, and a rear frame engaging the inner face of the wall in the crawl space and connected under tension through the opening to the front frame. A first form of the vent can be installed axially into the vent opening from the outside of the building to replace an existing vent in a finished wall. A second form of the vent is installed vertically into the vent opening in the wall before the opening has been capped, as part of new construction.

Abstract: A return air pressure relief vent comprising a baffle structure having two ports, disposed in a partition between two volumes of air and including a plurality of passages that each encompass a straight line extending between the two volumes of air, the plurality of passages structured and arranged to accommodate a pressure balancing flow of air between the two volumes of air while restricting the passage of sound and light.

Abstract: A vent assembly for mounting in a passageway extending through an exterior wall to provide ventilation to the space bounded by the exterior wall includes an apertured panel exteriorly juxtaposed with a security grate to prevent unauthorized intrusion through the exterior wall. Carriage bolts extend through the apertured panel and security grate into engagement with an anchoring element, such as a pair of L-shaped brackets disposed on opposed sides in the passageway. The smooth surfaced head of the carriage bolts, coupled with the square cross-section of the shank adjacent the head mating with square apertures in the apertured panel and in the security grate prevent turning of the carriage bolts from a location external to the exterior wall. Air through the passageway may be filtered with an air filter supported by bolts extending from the security grate.

Abstract: A connector frame for use as a support member for mounting grilles at ventilation openings in a building structure. The connector frame allows the grills to be mounted in slightly different locations to hide imperfections at the edges of the ventilation openings. The connector frame may include a pair of single connector frames that may be separated into two singly usable frames.

Abstract: An embeddable air duct block includes a tubular member extending between a pair of rectangular plate members spaced from each other. The tubular member has a pair of open ends and an interior passageway. One plate member has an inner surface coupled to one open end and a plurality of holes in fluid communication with the interior passageway. The other plate member is coupled to the tubular member and has a duct opening aligned with the interior passageway. Two cement cavities are preferably formed on opposite sides of the tubular member. An air duct is formed in a concrete block wall by installing and securing the air duct block in the concrete block wall. The blocks are coupled together by cementing slurry poured into the cavities. Optionally, reinforcing bars can also be utilized within the cement cavities and at least one cavity of the concrete block wall.

Abstract: A vent assembly for mounting in a passageway extending through an exterior wall to provide ventilation to the space bounded by the exterior wall includes an apertured panel exteriorly juxtaposed with a security grate to prevent unauthorized intrusion through the exterior wall. Carriage bolts extend through the apertured panel and security grate into engagement with an anchoring element, such as brackets disposed in the passageway. In addition or in the alternative screws penetrably engaging the security grate may be attached directly to the exterior wall laterally of the passageway. The smooth surfaced head of the carriage bolts, coupled with the square cross-section of the shank adjacent the head mating with square apertures in the apertured panel and in the security grate prevent turning of the carriage bolts from a location external to the exterior wall. For further security, the louvered vent may be configured to overlap and shield the heads of the screws, if used.

Abstract: A vent assembly for mounting in a passageway extending through an exterior wall to provide ventilation to the space bounded by the exterior wall includes an apertured panel exteriorly juxtaposed with a security grate to prevent unauthorized intrusion through the exterior wall. Carriage bolts extend through the apertured panel and security grate into engagement with an anchoring element, such as a pair of L-shaped brackets disposed on opposed sides in the passageway. The smooth surfaced head of the carriage bolts, coupled with the square cross-section of the shank adjacent the head mating with square apertures in the apertured panel and in the security grate prevent turning of the carriage bolts from a location external to the exterior wall. Air through the passageway may be filtered with an air filter supported by bolts extending from the security grate.

Abstract: A vent assembly for mounting in a passageway extending through an exterior wall to provide ventilation to the space bounded by the exterior wall includes an apertured panel exteriorly juxtaposed with a security grate to prevent unauthorized intrusion through the exterior wall. Carriage bolts extend through the apertured panel and security grate into engagement with an anchoring element, such as brackets disposed in the passageway. In addition or in the alternative screws penetrably engaging the security grate may be attached directly to the exterior wall laterally of the passageway. The smooth surfaced head of the carriage bolts, coupled with the square cross-section of the shank adjacent the head mating with square apertures in the apertured panel and in the security grate prevent turning of the carriage bolts from a location external to the exterior wall. For further security, the louvered vent may be configured to overlap and shield the heads of the screws, if used.

Abstract: A security vent includes a housing, a drawer and a latch. The housing includes first and second ends defining a passageway in which the drawers receive. The drawer includes a filter receiving slot. The drawer is movable in and out of the passageway to provide access to the filter receiving slot such that a filter can be inserted and removed therefrom. The latch assembly allows the drawer to be locked in a closed position and unlocked for opening. In another embodiment of the invention, a security vent mountable to the existing air duct inlet opening includes a housing assembly having a mounting frame and a housing wall secured to the mounting frame. The housing wall includes a front faced space from the mounting frame. The front face is perforated. The housing wall and mounting frame define a filter receiving region for holding an air filter.

Abstract: A connector frame for use as a support member for mounting grilles at ventilation openings in a building structure. The connector frame allows the grills to be mounted in slightly different locations to hide imperfections at the edges of the ventilation openings. The connector frame may include a pair of single connector frames that may be separated into two singly usable frames.

Abstract: A double divisible connector frame for use as a support member for mounting return grilles and louvers in a building structure which is rectangular in shape and having a planar surface on one side and a pair of precisely-similar spaced-apart continuous rectangular flanged frames on the other side, and a lineal line of severance equidistant between said smaller flanged frames for dividing said double frame into a pair of similar smaller frames for mounting said grilles and louvers.

Abstract: A multi-part foundation ventilator. The ventilator has a first frame member with a first exterior peripheral edge flange, and, extending inwardly therefrom, a protruding wall portion of preselected width X.sub.1(A). The first inwardly protruding wall portion has an outer surface portion with a first receiving ledge portion and a protruding, first joining flange portion. A second frame member has a second inwardly protruding wall portion of preselected width X.sub.2(A). The second inwardly protruding wall portion further includes an outer surface portion, with a second receiving ledge portion and a second joining flange portion. The first joining flange portion of the first frame member is sized and shaped to fit in close fitting, overlying engagement with the second receiving ledge portion of the second frame member.

Abstract: A method for fabricating a vent cover (10) with an insulating sheet (11) bonded on an inside face of an outer sheet (12). A sheet (11E) which serves as a gasket is provided on the inside face (12A) of the outer sheet. A kit (14) is provided with a preform (10A) for the cover. The preform is cut around the insulating sheet and not the outer sheet to provide the cover. The cover provides good insulation and is relatively resistant to damage from handling.

Abstract: A security vent, providing a housing assembly mounted to a support, the housing assembly including a side wall portion having first and second distal ends thereof and defining a passageway therebetween; a drawer assembly having a filter-receiving slot therein, the drawer assembly being slidingly received by the housing assembly second distal end, the drawer assembly being moveable within the housing assembly passageway between an open position and a closed position, wherein the filter-receiving slot is disposed within the housing assembly when the drawer assembly is in the closed position, and wherein the filter-receiving slot is in communication with a region outside the housing support when the drawer assembly is in the open position; and, a latch assembly mounted to the housing assembly, the latch assembly being moveable between a locked position and an unlocked position, the latch assembly being received by a latch-receiving notch provided in the drawer assembly when the drawer assembly is in the closed p

Abstract: A heat-insulating outer wall for a building includes an inner air gap (7) with a partitioning wall (12) which separates the inner air gap into a first part (7a) and a second part (7b), which at the top is equipped with an outlet opening (11). The second part (7b) is equipped at the bottom with a heater (13). Airflow-regulator (15) is positioned in suitable places in the wall in order to limit the airflow in the case of large air pressure differences.

Abstract: A vented frame (1) includes an air passage of L-shaped section having a horizontal portion (8) and a vertical portion (9). A ventilator (7) is inserted into the vertical portion and comprises an elongate main body with first and second openings (10), (11) diametrically opposed to one another. A closure member controls the passage of air through the ventilator. The ventilator consists of two parts which are separable from one another and, once installed, the lower of the two parts can be replaced or repaired, while the other part is left in place.

Abstract: A pipe-shaped ventilating device having a collar for mounting in a plastic foil or a similar flexible material, e.g. a water-tight foil placed on the rafters of a roof construction in order to provide for circulation from the air space under the foil, is formed to be mounted by a spiral movement around the edge of an opening shaped in the foil. The collar is provided with an upper wall and a lower wall, of which the latter is provided with a slit obliquely directed towards the pipe.

Abstract: A foundation vent (20) for use with concrete forms (31 ) includes two frames that telescope together into a plurality of locking positions to allow the width of the vent to be changed to match the thickness of the concrete wall. The first frame (26) includes first walls (34) and a first flange (40). The first frame has a first inner end (36), and a first outer end (38). The first flange is disposed around a perimeter of the first outer end. The second frame (28) includes second walls (60) and a second flange (70). The second frame has a second inner end (66), and a second outer end (68). The second flange is disposed around a perimeter of the second outer end. A ridge (74) engages in channels (52, 58) defined by a plurality of shoulders (50, 54) disposed on the frames to allow the two frames to telescope together and to lock at various, predetermined widths. The ridge is disposed around a perimeter of the second inner end of the second frame. The ridge thus engages one of the channels.

Abstract: The plastic foundation vent embodying the invention comprises a plastic body with an integral peripheral rectangular wall surrounding the plastic body and defining opposed long sides and opposed short sides, an integral peripheral flange extends outwardly from the peripheral wall. A central integral screen portion having openings for bending and prevention of entry of animals and the like is provided within the peripheral wall. The peripheral flange has a front surface and a rear surface. A first groove is provided on the rear surface of one of the flanges alongside to define a live hinge line permitting the flange to be bent backwardly and forwardly.

Abstract: A one piece molded plastic foundation ventilator. The ventilator includes a one-piece continuous and structurally jointless plastic tubular member having a first through passageway, with the tubular member having a front and a rear, and with the through passageway of the ventilator including a portion between the front and the rear having a smaller cross-sectional dimension than the front, and having a smaller cross-sectional dimension than the rear. The front and rear of the ventilator includes outwardly directed flange portions. The ventilator may be supplemented by the addition of a screen and a hinged cover with securing latches.

Abstract: A security vent, providing a housing assembly mounted to a support, the housing assembly including a side wall portion having first and second distal ends thereof and defining a passageway therebetween; a drawer assembly having a filter-receiving slot therein, the drawer assembly being slidingly received by the housing assembly second distal end, the drawer assembly being moveable within the housing assembly passageway between an open position and a closed position, wherein the filter-receiving slot is disposed within the housing assembly when the drawer assembly is in the closed position, and wherein the filter-receiving slot is in communication with a region outside the housing support when the drawer assembly is in the open position; and, a latch assembly mounted to the housing assembly, the latch assembly being moveable between a locked position and an unlocked position, the latch assembly being received by a latch-receiving notch provided in the drawer assembly when the drawer assembly is in the closed p