Procraft 3U 9" Deep Equipment Rack 3 Space, 3 Spaces Tall (5.25") All of our racks are manufactured at our modern facility in Jackson, Missouri. Procraft 3U equipment rack 9" deep, 3/4" birch plywood(light weight and very sturdy) with high quality, black automotive grade carpet. Procraft steel reinforced strap handle with T-nuts and machine screws. Procraft protective corners. Penn Elcom pre-tapped rack rail(for 10-32 machine screws). Free set of 12 rack screws and washers included! Rack rail is installed 1/2" from the front edge of the unit. Rabbeted joints screwed and glued for years of service. Overall dimensions are(including corners) 21-1/4" Wide, 7-3/8" Tall and 9-1/4" Deep. Inside dimensions are 19-1/8" Wide, 5-3/8" Tall and 9" Deep. This unit does not include front or rear covers.