18U Open Frame Server Rack with casters, U-Mark Mounting rails and hardware Adjustable from 24" to 37" Depth 4-Post Relay accommodate most Server, Network and other IT Equipment Heavy Duty Casters-Wheels with Brake option to improve mobility / Cage Nuts Mounting hardware included Easy and Quick Assembly - No special skills / tools required Flexible Return Policy and 2-year Guarantee on Server Rack Cabinet Network Enclosure