StarTech.com 1U Adjustable Vented Server Rack Mount Shelf

175lbs - 19.5 to 38in Deep Universal Tray for 19" AV/ Network Equipment Rack (ADJSHELF) - Rack shelf - black - 1U - 19" - for P/N: CABSCRWS1224, RK1536BKF, RK1836BKF, RK3236BKF, RK4236BKB, RK4242BK24, RK4242BK30