Abstract: A modular fire-rated conduit or duct assembly suitable for applications such as ventilation systems in a multi-floor or multi-room building.

Abstract: A modular fire-rated conduit or duct assembly suitable for applications such as ventilation systems in a multi-floor or multi-room building.

Abstract: A fire-rated ventilation duct system and improvements therein.

Abstract: A fire-rated ventilation duct system and improvements therein.

Abstract: A fire-rated ventilation duct system and improvements therein.

Abstract: A fire-rated conduit assembly. The fire-rated conduit assembly comprises a plurality of pre-fabricated, e.g. factory fabricated, modular sections that are configured to be mechanically assembled to form a continuous fire-rated conduit which is suitable for allowing movement of air, transporting of combustible or hazardous materials, and/or enclosing building mechanical and services.

Abstract: A fire-rated exhaust duct system comprising a modular configuration or structure. The fire-rated exhaust duct system comprises a plurality of exhaust duct sections. Each of the exhaust duct sections is configured to be joined or connected with other exhaust duct sections in the field or at an installation site, e.g. in building housing a kitchen facility or a laboratory facility to form longer sections or runs for exhaust duct system.

Abstract: A fire-rated exhaust duct system comprising a modular configuration or structure. The fire-rated exhaust duct system comprises a plurality of exhaust duct sections. Each of the exhaust duct sections is configured to be joined or connected with other exhaust duct sections in the field or at an installation site, e.g. in building housing a kitchen facility or a laboratory facility to form longer sections or runs for exhaust duct system.

Abstract: A fire-rated exhaust duct system comprising a modular configuration or structure. The fire-rated exhaust duct system comprises a plurality of exhaust duct sections. Each of the exhaust duct sections is configured to be joined or connected with other exhaust duct sections in the field or at an installation site, e.g. in building housing a kitchen facility or a laboratory facility to form longer sections or runs for exhaust duct system.

Abstract: A fire-rated exhaust duct system comprising a modular configuration or structure. The fire-rated exhaust duct system comprises a plurality of exhaust duct sections. Each of the exhaust duct sections is configured to be joined or connected with other exhaust duct sections in the field or at an installation site, e.g. in building housing a kitchen facility or a laboratory facility to form longer sections or runs for exhaust duct system.

Abstract: A fire-rated exhaust duct system comprising a modular configuration or structure. The fire-rated exhaust duct system comprises a plurality of exhaust duct sections. Each of the exhaust duct sections is configured to be joined or connected with other exhaust duct sections in the field or at an installation site, e.g. in building housing a kitchen facility or a laboratory facility to form longer sections or runs for exhaust duct system.

Abstract: A fire-rated exhaust duct system comprising a modular configuration or structure. The fire-rated exhaust duct system comprises a plurality of exhaust duct sections. Each of the exhaust duct sections is configured to be joined or connected with other exhaust duct sections in the field or at an installation site, e.g. in building housing a kitchen facility or a laboratory facility to form longer sections or runs for exhaust duct system.

Abstract: A fire-rated exhaust duct system comprising a modular configuration or structure. The fire-rated exhaust duct system comprises a plurality of exhaust duct sections. Each of the exhaust duct sections is configured to be joined or connected with other exhaust duct sections in the field or at an installation site, e.g. in building housing a kitchen facility or a laboratory facility to form longer sections or runs for exhaust duct system.

Abstract: A fire-rated exhaust duct system comprising a modular configuration or structure. The fire-rated exhaust duct system comprises a plurality of exhaust duct sections. Each of the exhaust duct sections is configured to be joined or connected with other exhaust duct sections in the field or at an installation site, e.g. in building housing a kitchen facility or a laboratory facility to form longer sections or runs for exhaust duct system.

Abstract: An access panel assembly for providing access to a duct through an opening in the duct. The access panel assembly comprises a sealing member, a cover member and fasteners. The sealing member fits around the opening in the duct and the cover member fits over the sealing member and coupled to the duct by the fasteners. The cover member may comprise a fire resistant panel and is formable to the shape of the duct thereby allowing the access panel assembly to be fitted to irregular shaped ducts or openings in the ducts. The access panel assembly allows easy and ready access to the interior of ducts or other air handling equipment to permit the inspection and cleansing of the interior surfaces and other interior components of any contaminants.

Abstract: An enclosure apparatus for protecting cable trays, electrical cables, pipes and/or includes other control equipment. The enclosure apparatus includes one or more linear sections and/or elbow or corner sections. The sections are configured to be joined together to form longer sections or transition sections. Each of the sections includes a protective outer layer that is fire resistant and/or blast resistant. According to an embodiment, one or more the sections includes a panel or re-enterable section that can be removed for accessing the interior of the enclosure, for example, the cables, pipes or control equipment, or for assembling the sections around an existing cable installation.

Abstract: An enclosure apparatus for protecting cable trays, electrical cables, pipes and/or other control equipment. The enclosure apparatus comprises one or more linear sections and/or elbow or corner sections. The sections are configured to be joined together to form longer sections or transition sections. Each of the sections comprises a protective outer layer that is fire resistant and/or blast resistant. According to an embodiment, one or more the sections includes a panel or re-enterable section that can be removed for accessing the interior of the enclosure, for example, the cables, pipes or control equipment, or for assembling the sections around an existing cable installation.

Abstract: An acoustic panel comprising an inner core sandwiched between outer sheets formed from a different material. According to an embodiment, the inner core comprises a cementicious material that also has fire resistant properties, and the outer sheets comprise metallic sheets. According to an embodiment, the outer sheets include metal tines for forming a bond between the respective metallic sheets and the inner core. The metal tines are formed as projections during the piercing of holes in the metallic sheets. According to an embodiment, the diameter of the holes and/or the thickness and/or composition of the cementicious material can be varied or configured to change the acoustic damping properties of the panel. According to another aspect, the panel comprises a fire resistant acoustic panel suitable for use as a fire protective or blast protection barrier.

Abstract: An access panel assembly for providing access to a duct through an opening in the duct. The access panel assembly comprises a sealing member, a cover member and fasteners. The sealing member fits around the opening in the duct and the cover member fits over the sealing member and coupled to the duct by the fasteners. The cover member may comprise a fire resistant panel and is formable to the shape of the duct thereby allowing the access panel assembly to be fitted to irregular shaped ducts or openings in the ducts.

Abstract: A fire-rated exhaust duct system comprising a modular configuration or structure. The fire-rated exhaust duct system comprises a plurality of exhaust duct sections. Each of the exhaust duct sections is configured to be joined or connected with other exhaust duct sections in the field or at an installation site, e.g. in building housing a kitchen facility or a laboratory facility to form longer sections or runs for exhaust duct system.