This AV cart includes four different sets of upright legs, allowing the user to select the proper shelf height for specific applications. Each cart includes a convenient 3-outlet UL listed power strip with a 15 foot 14-gauge cord to provide at-the-jobsite electricity. Top shelf includes cabling hole for cord management, and comfortable push handle features an integral cord wrap. Shelves and uprights are constructed of strong, non-conductive, recycled ABS structural foam plastic for years of use. Both shelves have retaining lip edges and textured surfaces to prevent load from sliding. Mobile audio-visual cart has 4" ball bearing non-marring rubber swivel casters (2 with brakes). Shipped ready to assemble. Limited Lifetime Warranty.