Rev-A-Shelf's Double Knife Block Tray Insert is out of the box ready at width: 18-1/2''(470mm) x depth: 22'' (558mm) providing 55 slots to store knives and has a separate compartment in the front for other utensils. Made of classic hardwood with a UV cured clear finish to ensure an acceptable match to any kitchen cabinet and can be trimmed to any size to fit drawers of various widths and lengths. Minimum dimensions: Width: 12 1/2'' (317mm) x Depht: 18'' (457mm).