EL-P97 and EL-P137 feature three shelves. The height can be easily adjusted to accommodate five different heights 42", 38", 34", 30" and 26" for P97; or 54", 50",46", 42", and 38" for P137. Both of them are arc-welded durable steel constructed with black or quartz* powder paint finish. Recommended for use with up to 20" diagonal TV set or monitor. Shelves measure 24"W x 18"D. The distance between the middle and bottom shelf is 161/2". There are four 4" silent roll ball-bearing swivel casters, two locks. Ship UPS. Ready to assemble.