The DC4R Series 4-Post Open Frame Adjustable Depth Rack delivers flexible mounting solutions for data centers and server environments. Its open frame design maximizes airflow and cooling efficiency while the adjustable depth accommodates equipment of varying sizes. Four-post construction provides robust support for heavy loads, and the modular design simplifies installation and future reconfiguration. Ideal for organizations seeking scalable infrastructure that adapts to evolving technology needs without costly replacements. Features Available in 24U and 44U mounting heights. Self-squaring design ships un-assembled (some assembly required). For 44U height, add optional third or fourth pair of rails DC4RPR44 to provide additional adjustable mounting depths. Optional solid side panels for added security. Two (2) pairs of integrated 10-32 ground studs at the rack's front and rear. Stud pairs are conveniently spaced 5/8” apart and located across from each other inside the rail channel. For added convenience, two (2) pairs are located near the top of the rack, while the others are near the bottom. Rail depth L-bracket restricts the installer from over-extending the rack. This ensures the integrity of the rack. One (1) set of two (2) horizontal cable manager bars. Additional cable manager bars are available by ordering part number DC4RSHCM. Two (2) pairs of 19” mounting EIA-compliant rails. Square hole rail version ships with a 50-pack of screws and cage nuts CAGKIT1032-50. 10-32 Threaded rail version ships with a 50-pack of screws SCREW1032-50. Includes marked rack unit dividers to aid in equipment mounting.