Extra-deep pushbutton enclosure, type 4 made of 16 or 14 gauge steel, ANSI 61 grey polyester powder paint inside and out. Seams continuously welded and ground smooth. Captivated stainless steel cover screws thread into sealed wells. Grounding stud on body. Bonding provision on cover. High-performance polyurethane gasket. Factory stamped 4-way pushbutton holes. Extra-deep pushbutton enclosures designed to hold 30.5 mm and 22.5 mm pushbuttons and switches, feature stainless steel screws and a high-performance polyurethane gasket to meet Type 4 environmental protection rating. The added depth accommodates additional pushbutton contact blocks.