36" Wide x 36" Tall x 12" Deep. This is principally an exterior distribution box that can be used for communication hubs with telephone, computer, cable television and alarm system applications. This box is surface-mounted on an existing construction project or used in concrete tilt-up projects. It is made of 14 gauge zinc-coated steel with a desert tan powder coat finish. The reinforced hinged lid is locked with a standard can wrench. This is a fully enclosed box with two multiple 1-1/2" to 3" and ten 1" to 1-1/4" knockouts on the bottom. It is also NEMA 3R rated and UL listed. It also includes a 3/4" plywood backboard and a four-position ground bar mounted inside.