Steel project box, 18 ga. chassis and a 16 ga. cover. Overall dimensions are 11-1/8″ x 6-15/16″ x 3″, inside dimensions are 10-7/16″ x 6-3/4″ x 2-3/8″. Supplied with a durable black powder coat finish, rubber screw–on feet and the screws assemble the enclosure.