A&E SPECIFICATIONS: The rack shelf shall be Lowell Model LXR-NS21, which shall mount to the rack's side rails. Overall dimensions shall be 18.79"W x 20.45"D x 1.5"H. The 16-gauge steel shelf shall be made in the U.S.A. and have a black semi-gloss powder epoxy finish. It shall feature bottom vents and side obrounds for wire management.