42" H AV Cart - 3 Shelves, Pullout - Black Legs. In addition to three 1.5"-thick molded plastic shelves that won't scratch, dent, rust or stain, this durable AV cart has a front pullout tray that's ideal for supporting a keyboard or laptop. The three primary shelves have a textured surface and .25" retaining lip to help secure items and a molded push handle for easy maneuverability. Four 4" full-swivel casters make it easy to roll the cart from location to location and two locking brakes allow you to quickly stabilize the cart when needed. Its strength, utility and mobility make this cart perfect for use with audio/video equipment.