EL-WP137 is three shelves AV carts. Their height can be easily adjusted to accommodate six different heights 54", 50",  46", 42", 38" and 34" in 4" increments. It is built with  sturdy square steel tubing legs with black powder paint finish. Recommended for use with up to 30" diagonal TV set or monitor.  Shelves measure 30"W x 22"D. The distance between the middle and bottom shelf is 28". There are four 4" silent roll ball-bearing swivel casters, two locks. Ship UPS or FedEx ground. Ready to assemble.