Rev-A-Shelf 5WB2-0918-CR Base Cabinet Pullout 2 Tier Wire Basket Reduced Depth Sink & Base Accessories, 9 W x 18 D-Inches Package Contents:(1) Two-tier Chrome basket and mounting hardware Designed for a Cabinet that is 12" width (B12) from outside to outside, with a 8-1/2" or wider opening Assembled dimensions: 8.75" W x 18" D x 19" H 100lb Full-Extension Ball-Bearing slide system Bottom, side and rear mounting for total stability Requires a 8-1/2" or larger cabinet opening to work properly.