Versatile shelf can be used upside-down as a tray with a protective lip or right-side up as a shelf.Unit provides easy access to 16-3/4" wide (max.)keyboards, video tape recorders, and control equipment.Solid bearing slides extend 17" outside of cabinet rails and include lock-out protection.It mounts 19" W cabinets that are 18-1/2" to 25-1/2" deep which are equipped with front and rear mounting rails.The 16-ga. CRS assembly is finished in black epoxy.It supports up to 85 lbs.(38.56kg) and includes necessary hardware.