The basket fits with the L20 Aluminum Floating Frame which carries a dimension of, (W) 19 1/2in. x (L) 23 1/2 in. by (D) 10 1/2 in. They can be slipped into the Floating Frame in short order. All use the same alumnimum frame. The frames are constructed for quick change baskets. You may change from one size to another in approximately 30 seconds, by having one frame and as many baskets with the spacing to fit your needs. The baskets are made from 3/16" hard aluminum rod and rubber bars molded for this application. Info Commerce Welding