Abstract: A front rail is formed by bending a steel sheet. The front rail has a front part having a hole, the hole allowing insertion of a dowel pin arranged on a printed circuit board, a top part mounting a guide rail for guiding the printed circuit board thereon, a rear part extending from the top part via a hem formed by folding back the steel sheet, for supporting a lower portion of the top part, and a bottom part extending from the rear part.

Abstract: Methods for making, etc., a shelf-front assembly, including, in some embodiments, extruding a plastic strip having 1) a generally horizontal floor and 2) an upward wall extending up from the generally horizontal floor; cutting a length of the plastic strip, attaching the length of the plastic strip on a shelf by sliding a portion of the generally horizontal floor under an overhanging member, and laying the generally horizontal floor on a generally horizontal portion with a blocking element in front of a retaining surface of the strip.

Abstract: A warehouse shelving system comprises a material rack providing for storage of products on-sale and in a location visited by customers. A curtain netting is attached to the material rack. An advertisement promoting a company, product, and/or service is disposed on the curtain netting and visible to the customers. Alternatively, a warehouse material-rack safety-netting system includes left and right vertical extension posts that bolt to the face of the top bay of an open material rack. A two-part curtain netting that parts in the middle is supported between horizontal, parallel top-and-bottom wire ropes on hooks. The left and right edges of the curtain netting are hooked to the vertical extension posts with carabiners. A latch is provided at the center to secure the two-parts of the curtain netting together. The curtain material is painted, embroidered, or other patterned with advertising to promote a company, product or service.

Abstract: A beam and tension rod arrangement is for use with a push back storage rack system. A front beam extends between two front vertical uprights across the loading position of one or more cart lanes. An interior structural cross support extends between two interior vertical uprights that are located at points along the length of each cart lane. Diagonal tension rods extend from each end of the interior structural cross support to points on the front beam's structural angles brackets that are adjacent the middle portion of the front beam. When a loaded cart collides with the front beam, the majority of the collision forces are directed toward the middle portion of the front beam, which exerts diagonal tension forces on the tension rods between the front beam and the interior structural cross support. The diagonal tension rods serve to brace the front beam against flexing, transferring much of the impact strain to the interior structural cross support.

Abstract: A storage rack has upright columns supporting vertically cambered beams having step box or channel shapes accommodating a generally horizontal deck for carrying pallets and product loads. The beams have upward cambers or convex curvatures that increase the load carrying capacity of the rack.

Abstract: The invention pertains to a connecting corner used in assembling metal rack frame enclosures for housing a variety of equipment. A completely assembled rack frame consists of eight connecting corners, three sets of variable length rails (four identically sized rails per set), and ninety-six fasteners. The connecting corner is made of metal. The connecting corner has three legs; base (10), leg (12), and leg (14) with three inner slots; slot (42), slot (44), and slot (46). Each slot accepts two-legged metal rail (58), with industry standard, consistently repetitive hole pattern; hole (60), hole (62), hole (64), and marker (66). Each slot is supported by double-sided overlapping tapered reinforcing ribs; rib (50), rib (52), and rib (54). Rail stop embossment (48) prevents rails in slot (42), slot (44), and slot (46) from making contact with each other. There are four counter sunk holes in each leg of connecting corner.

Abstract: A protector for an upright column of a product storage rack has a V-shaped body with flat side walls joined to a convex curved vertical apex section. Pairs of studs cooperate with keyhole slots in the column to releasably mount the protector on the column. A releasable latch mounted on the protector engages the column to prevent removal of the protector from the column. The latch can be moved out of engagement from the column to permit the protector to be removed from the column.

Abstract: A safety net system is configured for mounting to a rack having a pair of spaced apart upstanding posts, in which the upstanding posts have open tops and holes formed in side walls thereof. The safety net system includes a pair of spaced apart uprights, upper and lower mounts operably connecting each upright to a respective rack post and an upper element extending between and mounted to the uprights at about an upper portion of the uprights. A net extends between and is mounted to the uprights and mounted to the upper element. The net is removably mounted to the uprights and to the upper elements and the uprights are variably mountable to the rack posts to vary a height of the net above the posts.

Abstract: A product pusher device comprising an elongated guide track and a pusher sled slidably guided along the track for urging product packages forwardly on a display shelf. The pusher sled incorporates a housing for containing a coiled strip spring element. The end extremity of the spring is anchored at the forward end of the guide track, and t he coiled body spring is confined within the housing at the back of the sled. By constructing the sled housing with an open bottom, assembly is greatly facilitated by allowing the spring to be anchored on the guide track independently of the sled and thereafter allowing the sled to be lowered over the coiled body of the spring and pressed downward to be snapped into assembled position on the guide track.

Abstract: A blank panel for use with rack units. The blank panel comprises at least one face plate having a rectangular front plate surface, a back plate surface, top plate surface, bottom plate surface and two side plate surfaces. The face plate has a height corresponding to multiples of 1.75 inches. The face plate incorporates at least one recess for slidably receiving fasteners. The blank panel further comprises fasteners with mating portions for being slidably engaged with the face plate, and fastening portions for being further attachable to a rack unit. The fasteners have varied geometry to accommodate rack units with alternate configurations. The blank panel further comprises a plurality of face plates attached along the top and bottom plate surfaces. Each of the face plates is capable of individually receiving fasteners. The individual face plates of the blank panel are also modular and can be separated to configure the blank panel to varied height requirements.

Abstract: A bicycle stand for supporting a wheel of a bicycle comprises a base having a front end and a back end, a ramp mounted on the front end of the base, a three-way hinge having three hinge portions with one of the hinge portions being attached to the ramp, a pair of opposed base supports mounted on the back end of the base, a pair of opposed side supports with each of the side supports being attached to one of the hinge portions, a pair of movable support rods with each of the rods connected to one of the base supports and one of the side supports, and a tensioning member connected to the ramp and one of the side supports.

Abstract: A system for the display and distribution of multiple product items, where the product items bear radio frequency identification (RFID) tags, and an RFID reader is associated in close proximity for maintaining effectively continuous inventory control. A product display tray is provided with multiple product channels and individual pusher sleds in the product channels for urging the product items to the front of the display. The pusher sleds are actuated by non-metallic tension elements extending underneath the product items in conjunction with spring-actuated windup reels for maintaining the tension elements under tension urging the sleds in the desired direction. An RFID reader board is disposed directly under the product display tray, arranged for periodic reading of the entire contents of the tray. The non-metallic tension elements, extending underneath the product items, provide for actuation of the pusher sleds without interfering with the radio frequency identification procedures.

Abstract: A detachable device of a cable management arm mainly comprises a detachable plate, a bracket, and a retaining member combining with the cable management arm between a computer rack and a component drawer. The detachable plate includes a plurality of engaging members integrally formed thereon. The bracket includes a positioning hole, and a plurality of assembling holes adapted to receive the associated engaging members. The retaining member is pivotally mounted to the detachable plate. The retaining member includes a protrusion adapted to extend into the positioning hole of the bracket, and an elastic member adapted to maintain a retaining relationship with an assembled position or a disassembled position defined in the positioning hole of the bracket.

Abstract: An easily adjusted apparatus for storing and dispensing cans, bottles and other containers, i.e. an adjustable merchandise slide, includes an adjustable mesh of ribs and deformable connecting members, as well as partitions, front panels and locking members attached to the mesh. The mesh, partitions and front panels define channels for holding rows of containers. The mesh is configured to be expanded or compressed as needed to make the channels wider or narrower. Each channel's width can be separately adjusted. The locking members attach to the mesh to maintain a desired width for each channel.

Abstract: An integral pallet rack post reinforcement kit for protecting the lower pallet rack frame from forklifts, etc. which takes the place of the lower six to twelve inches of the front frame post and fastened in its place. The kit is, for example, square tube welded to a three-sided outer clamp which bears a front angle deflector. These components are welded to a four inch by twelve inch by three-eighths inch footplate with two three-quarter inch by five inch by half inch wedge bolt anchors for attachment to the warehouse floor. Accordingly, this footplate replaces the original footplate. By using the reinforcement kit with the angle deflector, frontal impacts are deflected off to one side. The front post of the original pallet rack the present reinforcement kit would, over time, fail from cyclical or repeated impacts.

Abstract: A rack accessory for an equipment rack having mounting locations for a predetermined number of units of electronic equipment within a predetermined vertical distance, including: a front support member and a rear support member, wherein the front support member defines a bracket adapted to be secured on a front mounting portion of the rack; and a predetermined number of substantially equally spaced shelves extending between the front support member and the rear support member. The shelves are each configured to support a side portion of the electronic equipment when installed in the rack. The rack accessory has a height that substantially corresponds to the predetermined vertical distance, and the predetermined number of shelves is less than the predetermined number of units.

Abstract: A cargo shield assembly having rigid members mountable to the vertical uprights of a pallet rack. The assembly having a wire mesh panel movable in a vertical direction. The panels are connected to rods extending along the lateral ends of the panel, and the rods are movably connected to the rigid members. The cargo shield assembly has a locking mechanism to maintain the panel in an upward position and a stop member to limit the travel of the panel in both an upward and a downward motion.

Abstract: A merchandising display shelf track device for receiving a row of articles for sliding movement therealong has non-planar front face members connected to a base wall and top stop members. Racking forces exerted on the top stop members are transferred through the non-planar face members to the base wall to minimize racking.

Abstract: A supporting column (30) of the present invention includes a main body (31) and a stiff shaft (33). The main body (31) includes a half-sleeve shaft (319) and a plurality of parallel wing panels (317) encircling portions of the half-sleeve shaft. The main body has a C-shaped cross section and defines an axial bore along an axis direction. The wing panels are formed perpendicular to the half-sleeve shaft and each wing panel provides a protrusion (318) in the middle of the wing panel. A cassette (40) incorporating the supporting columns is used to accommodate a plurality of substrates.

Abstract: A shelf liner comprising a base for engaging a surface of a shelf, a panel secured to the base with the panel having at least two display areas for displaying information, in one embodiment a plurality of lips located on the panel slibably secures a first information strip to the first display area and slidably secures a second information strip to the second display area and in a further embodiment, a set of sidewall dividers having an elongated portion member are secured to the opposite sides of the base for forming a compartment therebetween.

Abstract: An adjustable apparatus for supporting an electronic device within a rack including a fixed rail, a sliding rail, and a latch. The sliding rail is adjustably receivable within the fixed rail. The latch maintains the relative positions of the sliding and fixed rails to define a length of the apparatus that accommodates a dimension of the rack. The fixed rail may be an L-shaped bracket including a plurality of locating points which interact with the latch to maintain the position of the fixed and sliding rails, a plurality of tabs suitable for receiving the sliding rail; and at least one mounting feature suitable for attaching to the rack. The sliding rail may include a mounting feature suitable for attaching to the rack, ribs that interact with the latch, and an attachment point. The latch typically includes a lever body and a tension member to which the attachment point attaches.

Abstract: A merchandising display shelf track device for receiving a row of articles for sliding movement therealong has non-planar front face members connected to a base wall and top stop members. Racking forces exerted on the top stop members and front face members are transferred through the non-planar face members to the base wall to minimize racking.

Abstract: A storage system including a shelf and bracket item holder where the item holder is supported upon a planar panel. The shelf has two end edges and two shelf-brackets which include a substantially circumferential flange, a receptacle portion for receiving one of the end edges of the shelf, and an upper panel catch and a lower panel catch projecting outwardly from a same side of the circumferential flange in aligned spaced relation to one another. A cantilevered lock-release latch is positioned adjacent to the lower panel-catch so as to project from an end of the circumferential flange toward the lower panel-catch. When each of the upper and lower panel-catches are inserted through and occupy a corresponding one of the perforations in the panel such that each of the lock-release tabs of the lock-release latches engages the outer surface of the perforated panel thereby deflecting the lock-release latches away from the perforated panel, the shelf and brackets are moved relative to the perforated panel.

Abstract: A shelf assembly includes at least one shelf supported by vertical posts, and a net having opposite sides connected to respective posts so that the net spans at least one edge of the shelf and an associated area above the shelf.

Abstract: The shelving comprises a structural shelving member having a profile bar (11) made of sheet metal. The profile bar (11) is reinforced by y reinforcement strip (12) over part of the length of the structural shelving member. This part of the structural shelving member can be subjected to higher loads. Since the reinforcement strip (12) does not extend over the entire length of the structural member, the capability to carry higher loads is archieved at relatively low weight. The structural shelving member is e.g. a shelving column (1), wherein reinforcement strips (12) are provided in a lower portion (7) of the column. An upper portion (6) of the column does not comprise a reinforcement strip. Or the structural member can be a transverse shelving crossbar (2), wherein a reinforcement strip is then provided in the centre portion.

Abstract: A cargo shield assembly having rigid members mountable to the vertical uprights of a pallet rack. The assembly having a wire mesh panel movable in a vertical direction. The panels are connected to rods extending along the lateral ends of the panel, and the rods are movably connected to the rigid members. The cargo shield assembly has a locking mechanism to maintain the panel in an upward position and a stop member to limit the travel of the panel in both an upward and a downward motion.

Abstract: A post for a rack. The post is formed of a sheet constructed of a malleable, bendable material. The sheet has a first end and an opposed second end. The first end forms a lower portion of the post and the opposed second end forms an upper portion of the post. The sheet has a first side and an opposed second side with the first and second sides extending generally between the first end and the second end of the sheet. The sheet is formed into a folded box section configuration wherein at least a portion of the first side overlaps a portion of the second side to provide an overlapping portion. The post can be used for forming a European Telecommunications Standards Institute conforming rack.

Abstract: A rack mount assembly for supporting a computer enclosure in a rack system having vertical apertured column flanges. The rack mount assembly includes an elongated mount adapter having mounting flanges disposed at each end thereof. Each mounting flange includes an alignment protrusion that is configured to fit in a corresponding aperture in one of the column flanges of the rack system. The elongated mount adapter comprises, for example, a slide mechanism or a rack rail.

Abstract: A front panel for a display rack has a base, upstanding sidewalls connected along their bottom end portions to the base, face members connected to the front edges of the sidewalls, and an elongate connecting member connected to the top end portions of the face members. The base, face members and connecting member define a viewing window for the display rack through which a beverage container in a display rack in a refrigerator can be viewed. The base and connecting member curve outward to position a beverage container forward in the display rack. A pair of downwardly extending fingers fit into receiving slots in a front segment of the rack to fasten the front panel to the front segment of the display rack.

Abstract: A furniture assembly system utilizes upright members having a pair of protruding hook portions that cooperate with a similar pair of hook portions of another upright member and mutually interconnect through slots in a shelf to hold the shelf in place. A plug inserts into an aperture formed by the interconnecting hook portions to hold the upright members in place and secondarily to provide further support to the shelf.

Abstract: A shelf, basket and drawer liner for wire-frame constructions includes a flexible plastic panel which can be rolled for storage or sale and unrolled onto wire racks or shelves or into wire-framed baskets or drawers. It is easily trimmed with scissors or torn along score lines to fit any surface. The material is sufficiently thick enough to support object placed on top of the liner and to prevent deflection that results in objects tilting, tipping or falling through the spaces between the wires. It attaches to the wire frame in a unique manner, and is clear to allow objects to be viewed through the liner.

Abstract: A shelf-front assembly has a first extruded plastic strip containing a label holder (e.g., a channel) and a second extruded plastic strip containing a vertical retaining wall. The first strip preferably has 1) a generally horizontal portion for placement on a shelf surface and 2) a label holder at a front end of the generally horizontal portion. The second strip preferably has 1) a generally horizontal floor and 2) an upward wall extending up from the generally horizontal floor. The first plastic strip is attached on a shelf with the generally horizontal portion on a top surface of the shelf and the label holder proximate a front side of the shelf. The first extruded plastic strip has a top snap-fit element running lengthwise along a top surface of the generally horizontal portion and has an overhanging member running lengthwise along the top surface and parallel to the top snap-fit element.

Abstract: A glass and cup holding assembly for an automatic dishwasher includes a rack and a rack extender. The rack has side walls with an upper edge having spaced apart upwardly opening sockets. The rack extender has side walls with a lower edge defining connector pins each having a shaft, at least a portion of which tapers inwardly from the lower edge, and an enlarged head defining a catch surface. The pins engage the sockets such that the shaft is disposed within the socket and the head catch surface engages an underside of the upper edge of the side wall.

Abstract: A shelf backer for filling a void between a shelf and a backing member. The shelf backer comprises a plug, which is reversibly receivable by the void, and a lip. The lip prohibits the shelf backer from passing through the void.

Abstract: A warehouse material-rack safety-netting system comprises left and right vertical extension posts that bolt to the face of the top bay of an open material rack. A two-part curtain netting that parts in the middle is supported between horizontal, parallel top-and-bottom wire ropes on hooks. The left and right edges of the curtain netting are hooked to the vertical extension posts with carabiners. In order to reduce inadvertent snagging, these hooks and wire ropes are critically attached along the middle line of the inside opposite-facing edges of the vertical extension posts. The front aisle-facing edges of these vertical extension posts are smooth and no part of the curtain netting extends past them when the curtains are fully closed. A latch is provided at the center to secure the two-parts of the curtain netting together.

Abstract: Fittings for mounting on frame members of a switchgear cabinet framework, the frame members having a free space towards the outside corner edge of the framework, which free space forms a receiver, which is closed towards the interior of the framework, is open towards the outside corner edge and is mirror-inverted relative to the diagonal of the frame member. The fittings have a mounting plate the cross-section of which is adapted to the cross-section of the receiver and which plate is connectable to the end profile side of the frame member. The mounting plate preferably has a central mounting bore. The mounting plate, in the longitudinal direction of the frame member, has a pre-determined width, which is preferably symmetrical to the mounting bore.

Abstract: A storage rack column protector (30) is designed to protect a column (12) from damage from a straddle or outrigger type fork truck. If one of the outrigger forks is aimed at and heading toward the protected column (12), a ramp (36) on the protector raises the offending outrigger fork and thus also the wheel of the fork truck. Should the fork truck continue advancing, a stop (38) will bring the outrigger fork and the fork truck to a complete stop before it makes impact with the column.

Abstract: A shelf assembly includes vertical posts and horizontal shelf supports that are configured and arranged to define at least one shelf space extending upward beyond upper distal ends of the posts. Net supports are connected to the posts in a manner that supports the net in a position spanning at least one edge of the shelf space.

Abstract: A merchandising display shelf track device for receiving a row of articles for sliding movement therealong has a front track segment, a riser panel and a number of ribs. The front track segment has a base wall with a front portion and a rear portion. The riser panel is upstanding from the front portion of the base wall. The ribs are upstanding from the base wall and are attached to the riser panel. The top surface of the ribs is inclined at the front so that a bottle sliding along the track has its direction changed so that the bottle does not tip over.

Abstract: A face bracket of a computer rack assembled for shelving electronic equipment is in the form of a long plate body. A first longitudinal edge of the long plate body is disposed with a right-angle bent edge. A second longitudinal edge has a bent edge extends with two right-angle bends to form a bent portion in a n-shape. Lock holes are disposed at a certain distance on the plate surface of the long plate body. The face plate bracket is fixedly locked on the inner side of an aluminum extruded machine rack frame so as to fix an expansion rod bracket for shelving the main set between two expansion rod brackets.

Abstract: A pallet rack safety net system comprises two parallel horizontal wire ropes that are stretched along the top and bottom edges of a shelf opening. A pair of hung left and right screens of flexible netting are attached between the top and bottom wire ropes so that they can be horizontally separated at the middle of the shelf opening. The inside vertical edges of each screen are finished with a metal bar and a clasp so the screens can be latched together at the middle. The outside left and right edges of the screens are secured to the outside of the shelf opening. If used on a top shelf that has no supports at each side of the opening, a pair of support posts are included that hold aloft the top horizontal wire rope. A network of stays and guys are used to reinforce each such post.

Abstract: A storage rack includes a stand and a string that is wound around the stand to form a plurality of clamping units for clamping casings of compact discs. Each clamping unit includes two parallel first crossing sections of the string disposed at a front side of the stand, and two parallel second crossing sections of the string disposed at a rear side of the stand. Each of the second crossing sections of the clamping unit is inclined relative to the first crossing sections.

Abstract: A pallet rack safety net system comprises two parallel horizontal wire ropes that are stretched along the top and bottom edges of a shelf opening. A pair of hung left and right screens of flexible netting are attached between the top and bottom wire ropes so that they can be horizontally separated at the middle of the shelf opening. The inside vertical edges of each screen are finished with a metal bar and a clasp so the screens can be latched together at the middle. The outside left and right edges of the screens are secured to the outside of the shelf opening. If used on a top shelf that has no supports at each side of the opening, a pair of support posts are included that hold aloft the top horizontal wire rope. A network of stays and guys are used to reinforce each such post.

Abstract: A rack accessory for an equipment rack having mounting locations for a predetermined number of units of electronic equipment within a predetermined vertical distance, including: a front support member and a rear support member, wherein the front support member defines a bracket adapted to be secured on a front mounting portion of the rack; and a predetermined number of substantially equally spaced shelves extending between the front support member and the rear support member. The shelves are each configured to support a side portion of the electronic equipment when installed in the rack. The rack accessory has a height that substantially corresponds to the predetermined vertical distance, and the predetermined number of shelves is less than the predetermined number of units.

Abstract: A shelf and bracket item holder where the item holder is supported upon a planar panel. The shelf has two end edges and two shelf-brackets which include a substantially circumferential flange, a receptacle portion for receiving one of the end edges of the shelf, and an upper panel catch and a lower panel catch projecting outwardly from a same side of the circumferential flange in aligned spaced relation to one another. A cantilevered lock-release latch is positioned adjacent to the lower panel-catch so as to project from an end of the circumferential flange toward the lower panel-catch. When each of the upper and lower panel-catches are inserted through and occupy a corresponding one of the perforations in the panel such that each of the lock-release tabs of the lock-release latches engages the outer surface of the perforated panel thereby deflecting the lock-release latches away from the perforated panel, the shelf and brackets are moved relative to the perforated panel.

Abstract: A rack rail assembly having an adjustable length that can be installed, without any tools or loose hardware, into a rack having mounting holes that are square or circular. It is also preferred that the rack rail assembly be reversible and able to support sliding and fixed deployment modes as well as cable mounting equipment. Accordingly, one preferred embodiment of the rack rail assembly comprises inner and outer rail members that are slidingly engaged. The rail members are adjustable lengthwise to be able to be used with various depth racks. The assembly further comprises a primary locking mechanism that locks the rails together at the desired length. The primary locking mechanism is further coupled to a biasing mechanism that allows the rails to be compressed for installation within a rack. Each end of the rail assembly has at least two pins that interface with mounting holes located in the rack. Preferably, the pins are capable of interfacing with circular or rectangular mounting holes.

Abstract: A device for fastening of attachment elements, such as mounting rails, mounting plates, deposit plates and the like on a frame leg of a switchgear cabinet rack, wherein the frame legs are designed symmetrically in relation to their cross-sectional diagonal line and are aligned with the latter with the diagonal line of the rack. On the inside of the frame legs oriented toward the interior of the rack, the frame legs form a fastening receiver with two fastening profile sides which are disposed vertically in respect to each other and extend parallel to the facing outsides of the switchgear cabinet rack. The frame legs form system fastening receivers in the form of square or rectangular openings and fastening bores and make transitions into additional profile sides having corresponding rows of fastening receivers, which extend perpendicular to the facing exteriors of the switchgear cabinet rack.

Abstract: In a basic rack, particularly for equipment cabinets, transverse profiles and depth profiles are connected by corner connectors to an upper and lower frame. Vertical profiles connect the upper and lower frame in the area of the corner connectors. At least the transverse and depth profiles are made from a triangular, particularly rectangular hollow profile. The corner connectors are provided with two complimentary constructed triangular fixing extensions for mounting the transverse and depth profiles. The vertical profiles have terminal end fastening inserts for fastening to the corner parts of the corner connectors.

Abstract: A support unit includes an outer panel intended to lie in a vertical plane when in use, the outer panel having a straight, horizontal lower edge. The support unit further includes an inner panel extending generally at right angles to the outer panel and connected thereto along a portion of the lower edge of the outer panel which is adjacent one end of that edge. The inner panel has structure defining a first horizontal contact plane on the upper side of the inner panel, and a second horizontal contact plane on the lower side of the inner panel. These two planes are substantially parallel. The preferred embodiment further includes a flange adjacent the mid-region of the outer panel and extending generally parallel with the two contact planes. In the preferred embodiment, the flange is flat and has a top surface which contains a hypothetical line extending at right angles to the outer panel.

Abstract: A rack accessory for an equipment rack having mounting locations for a predetermined number of units of electronic equipment within a predetermined vertical distance, including: a front support member and a rear support member, wherein the front support member defines a bracket adapted to be secured on a front mounting portion of the rack; and a predetermined number of substantially equally spaced shelves extending between the front support member and the rear support member. The shelves are each configured to support a side portion of the electronic equipment when installed in the rack. The rack accessory has a height that substantially corresponds to the predetermined vertical distance, and the predetermined number of shelves is less than the predetermined number of units.