The information below is per-pack only Supports Standard 19-inch Rack Mount Equipment. Product Size: 3.46 inches H x 19.29 inches W x 2.32 inches D; 1U Rack Unit. 2 Mounting Hole Distances for Different Usage: Near one 16" Center to Center for Meeting Standard Wall Studs ; Far one 18.3 " Center to Center for Heavy Loading. Max. Loading Capacity: 35 Pounds; Made of Cold Rolled Steel with Black Powder Coating. Multi-use Patch Panel: this Patch Panel Bracket can be Installed onto Wall Vertically or Under Desk Horizontally.