StarTech.com 2U Vented Sliding Server Rack Shelf w/ Cable Management Arm

27.7 to 31.6in Adjustable Mounting Depth - 50lb - 24in Deep - Rack shelf - black - 2U - 19" - for P/N: RK1233BKM, RK2433BKM, RK2537BKM, RK3236BKF, RK4236BKB, RK4242BK24, RK4242BK30