88090 - Extra-Deep Black Stationary Shelf Designed primarily as support for test equipment and other electronics. Rear supports adjust 22" to 36"D (558 X 915mm) to fit a wide variety of rack cabinets. Inside tray dimensions: 17-3/8"W x 21-3/4"D (441 x 552mm). Requires just 3-1/2" (2U) of rack space. Overall dimensions: 3-1/2"H x 19" x 21-3/4"D (88 x 482 x 552mm). 88090 Shipping weight 11 pounds.