Butcher Block top is 1-3/4 in. thick, helps deaden sound, absorbs impact. Replaceable top is attached to an all- welded steel frame. Half lower shelf constructed of 12 gauge steel with 3 in. high lip at rear. All-welded units ship fully assembled and ready for immediate use. Height is adjustable from 28-3/4 in. to 42-3/4 in. Capacity is 3,000 lbs.