StarTech.com 2U Vented Sliding Server Rack Shelf w/ Cable Management Arm - 27.7 to 31.6in Adjustable Mounting Depth - 125lb - 24in Deep - Rackhylde - sort - 2U - for P/N: RK1233BKM, RK2433BKM, RK2537BKM, RK3236BKF, RK4236BKB, RK4242BK24, RK4242BK30