The access door panel is supplied with one layer of 5/8" (15.9 mm) drywall or 1/2" (12.7 mm) drywall.  The concealed hinge and removable door panel are designed for an architecturally pleasing appearance. 

The FF Systems B1 is a universal, non-rated access door. A 20 ga / 1 mm galvanized steel, formed door provides strength and rigidness and features a screwdriver operated cam latch closure. The door is fully detachable and suitable for left- or right-hand operation.

The 20 ga / 1 mm galvanized steel frame with a rounded profile flange provides a smooth transition to almost any installation surface. Four riveted wall anchors ensure a quick and safe installation for any non-rated wall or ceiling application.