Freedom and flexibility in an adjustable 7-foot-high rack with M6 rails. Change the depth in this adjustable four-post rack in 1" increments from 17" to more than 41" to fit different equipment. Open design provides you with access to all sides of mounted equipment and cables when troubleshooting. Cross-connects aren't hindered by cabinet walls. Strong enough to hold heavy servers and equipment up to 2500 pounds. Holds 19" wide servers, panels, and other components. Has M6 (square hole) pattern on rails that meets EIA standards. Features durable 12-gauge steel uprights. Ships to you unassembled, allowing for easy transport to a job site. Predrilled mounting holes at the base enable you to anchor the rack to the floor for a safe and secure installation. Link multiple racks side-to-side with the joining kit (order separately). Waterfall kit and various shelves also available. Smooth black polyester powder paint finish. UL 1863 listed.