Model 662 fire-rated counter doors an integral frame are suited for many applications including schools, retail settings, hospitals, food service counters, concessions and cafeterias. These doors fit openings up to 9’5” x 4’5” (2870 mm x 1346 mm) and carry a UL 1-1/2 hour label for masonry and non-masonry fire walls. Model 662 integral frame doors are assembled at the factory as a complete unit with fully welded frames. The curtain is 22-gauge galvanized steel with baked-on polyester top coat; while the frame, guides, sill, hood and fascia are stainless steel.