Material:  11-gauge steel with smooth black semi-gloss finish Dimensions: 1.00 in. x 1.937 in. x 1.00 in. x 77.00 in. Printed RU increments to aid equipment mounting Vertical array of 1.25 in. diameter holes for cabling Mounting hardware Sold in pairs Spec Sheet:  2293-ZR44 Install: 24166 TAA Compliant Certified U.S. Steel Made in U.S.A. (BAA) The rack shall include Lowell Model ZR-44 rail kit, which shall feature two 11-gauge certified US steel “Z” offset rails. Featuring threaded 10-32 holes on E.I.A. spacing with printed RU increments, and a vertical array of 1.25 in. diameter holes for cabling. Each rail shall measure 1.00 in. x 1.937 in. x 1.00 in. x 77.00 in. and shall weigh 8.4 lbs. Rack Screws: RSP Series: Phillips Finish-head, 5.1 hardness, 10-32 x .875 RSM Series: Phillips Truss-head, 302 stainless steel, 10-32 x .75 RS Series: Phillips Truss-head, 10-32 x .75 RSV Series: Torx star post head, 10-32 x .875 RSR Series: Robertson square head, 10-32 x .875 Brackets: CHB Series: Chassis brackets support heavy equipment in 22″W/23″W racks