FITS ANY 4 POST RACK: Compatible with square round and threaded holes; Versatile design accommodates various rack types and setups ADJUSTABLE DEPTH: Mounting depth adjustable from 10 - 31.50' (254 - 800mm) to fit different equipment and rack configurations 75 LB CAPACITY: Supports up to 75 lbs (34 kg) ideal for standard 19' equipment; Replaces OEM slide rails for robust support INCLUDES WIRE BAR: Features optional cabling crossbar for enhanced cable management; Includes screws cage-nuts and nuts for easy installation UNIVERSAL COMPATIBILITY: Designed for compatibility with Dell HP IBM Apple server racks; Zinc-plated 18 GA steel construction for durability