Explosion-Proof Certified Enclosures-Junction Boxes: Enclosure Type - Explosion-Proof Control Enclosure; Material - Aluminum; Finish - Epoxy Powder Coat; NEMA - 3, 3R, 4, 7BCD, 9EFG; Cover Type - Hinged; Length - in - 20.95; Width - in - 20.95; Depth - in - 9.79; Mounting - Tap-In; Manufacturer Series - Series ECP