"* Includes two folding shelf wings which hook on top rack edges or DJ coffin stand tops of 7/16-inch (11mm) in width. * Engineered to hold turntable /CD player or other. * Complete with 1 piece steel 1-U-space rack shelf that can be used to store the wings. * Mounts easily to the top of rig. * Heavy duty support hinge uses finger press release catch to allow unfording of shelf. * Supplies much needed working space at a convenient operating height. * Each folding shelf dimensions: 16-in x 19.25-in x 7/16-in (two included). * Rack shelf dimensions:17-7/8-in x 1-3/4-in x 17 3/8-in with a 18.25 width to mounting hole centers (one included). * Hinge support height to top of shelf is about 12-in. * Shipping box dimensions: 20.09-in x 2.88-in x 21.08. * Product shipping weight: 17.64 lbs. * Product unpackaged weight: 15.87 lbs"