48" wide x 48" high 3 Hour Fire-Rated Insulated, Double Door Access Panels for Walls and Ceilings
The Largest Fire-Rated Two Hour Ceiling Door Available With Double Doors and Removeable Center Mullion. Double Leaf Allows Greater Accessiblity.
Materials: Painted, galvanized steel or 304 stainless steel
Frame: 14 ga steel. Removable center mullion (max 48”). Frame Depth 2 1/4”.
Wall Trim: 1-1/4” (32mm).
Door Panel:18ga, liner 22ga with slam latch.
Insulation: The door panel contains 1 1/2” of high temperature insulation material.
Finishes: Paint finish is an electrostatically applied rust-inhibitive prime coat or # 4 polished stainless steel finish on exterior surface
Hinges: Concealed continuous rod hinge. 48” or longer in wall position will be a continuous piano hinge. The hinge is placed on the “H” dimension.
This model of wall and ceiling fire-rated panels is manufactured under the factory inspection service of Intertek Warnock Hersey) and have a label reading: “Listed access frame and insulated fire door assembly 3 Hour fire rating. Vertical and Horizontal Installation. Temperature rise maximum 250° F/ 139° C at 30 minutes, 450° F/ 250° C at 60 minutes.”