These are GREAT .... I have bought 9 of them ..... some 36 inches wide and some 48 inches wide ..... the heavy duty locking rollers are great .....The optional liners make storing smaller items a breeze ....When we moved  .... it was a breeze to move from one house to another .... wrapped each rack with 3ft shrink wrap and the garage was the easiest part of our move ... these stainless steel shelves are really heavy duty and hold a lot !!!