Raised floor hatch MTA

squaremetalfor home automation systems

The emergency egress door shall be Model MTA as manufactured by U.S.F. Fabrication, Inc., with the size being specified on the plans. Covers: 1/4” [6.4mm] aluminum diamond plate cover reinforced for 300 psf pedestrian live load with flush lifting handles. Covers shall be equipped with 316 stainless steel hold-open arms with red vinyl grips that automatically hold covers in their upright/open positions. Also bolted to underside of covers are aluminum pipe handrails, and a safety chain on the non-exit side. Frame: Extruded 3/8” [9.5mm] aluminum trough section with integral anchor flange on four sides. Frame has an EPDM odor reduction gasket and a 1 1/2-inch threaded pipe coupling. Hinges: 316 stainless steel hinges and tamper resistant bolts/lock nuts. Security: The covers shall be held down by four 316 stainless steel slamlocks which are connected by cables to an interior push-bar latching mechanism. Also, for street access to the latching mechanism--a stainless steel pull ring will be secured inside an oversized recessed padlock box with hinged cover. Finish: Aluminum covers and frame have a mill finish which is protected during shipping and installation by an attached adhesive-backed vinyl material. Installation: Installation shall be in accordance with the manufacturer’s instructions. Warranty: The hatch shall be manufactured in the United States. Manufacturer shall guarantee against defects in materials and workmanship for a period of ten years.