Features. Adjustable mounting depth 22 to 40. Include 3 wide 28 pieces plastic cable management rings. Easy assembly One type of screw connection design. Loading Capacity Max. static load up to 800 Ibs. Open frame design with unrestricted airflow. 1224 threaded mounting holes on rails. Heavyduty cold rolled steel construction. Selfsquaring design with bottom anchoring holesKey Features. Left Vertical Rail, 2 PCS.. Right Vertical Rail, 2 PCS.. Base Bracket, 2 PCS.. Bottom Corner Section, 2 PCS.. Bottom Center Section, 2 PCS.. Top left Corner Section, 2 PCS.. Top Right Center Section, 2 PCS.. Top Center Section, 2 PCS.. Top Bracket, 2 PCS.. Cable Management Hook 28 PCS.Specifications. Size 7. Rack 45U 4 Post. Standards Compliance EIA/ECA310E, IEC 602973100, RoHS. Size 1224x5/8 Phillips Screws. Weight 59 lbs