Durable high-quality cold rolled steel with powder coated finish. Fits all standard 19" rack mount devices Depth adjustable from 22" to 40", support large equipment on depth adjustable shelves. Open design provides easy access to equipment and cabling during installation and maintenance. Dimensions: 37"H x 23.5"W x (22"-40")D. Maximum static loading up to 790 lbs. Ships flat pack; Easy assembly required, including screw package.