door for duct access with no hinge has an insulated door panel, along with the gasketing between the door and frame assures a tight seal without obstruction in the air system. Unit comes with extra – self tightening, hand operated cam latch(es) making the door panel completely removable. Galvanized steel material with mill finish. 2 latches. Silver finish. 6″w x 6″h outside flange dimensions. 4-3/4″w x 4-3/4″d x 5/8″h return flange dimensions.