Item model number BB1279 26D 4.5 x 4.5. Steel plated hinge with Steel pin, Non-rising removable pin with button tip and plug. Hinges have 2 ball bearings per hinge, Square Corners, 4.5" x 4.5" - Made of Steel with Steel pin, Non-rising removable pin with button tip and plug - For Use with Doors with Normal usage or doors with closers, including UL Fire Rated Door Openings approved for single doors up to 4/0 x 8/0 and double doors up to 8/0 x 8/0.
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