Da-Lite AVOH-2939J Da-Lite"s Carts give the lasting performance and quality you expect. All are designed to take the rigors of heavy use for years to come. You"ll also appreciate the attention to safety with no-slip pads, one-half inch safety lips and no sharp edges. Carts are standard with aircraft quality 4" casters and o-rings for smooth, quiet operation and with a powder coated finish. Pre-assembled for convenience and arc welded for added strength. Adjust in cart height and shelf depth to accommodate projectors.