Rev-a-Shelf 5WB2-1822-CR 17.75" x 22" Double Pullout Wire Basket Package Contents:(1) Two-tier Chrome basket and mounting hardware Designed for a Cabinet that is 21" width (B21) from outside to outside, with a 17-1/2" or wider opening Assembled dimensions: 17.75" W x 22" D x 19" H. Minimum cabinet opening- face frame(W x D x H):17.05 x 22.125 x 19.125 inches and frameless(W x D x H): 17.87 x 22.25 x 19.125 inches 100lb Full-Extension Ball-Bearing slide system Bottom, side and rear mounting for total stability Requires a 17-1/2" or larger cabinet opening to work properly.