Rev-A-Shelf's unique 4WDKB-1 Wood Double Knife Block Tray Insert is 18-1/2" wide X 22" long. The sleek design has 55 Knife Slots and an additional area for utensil storage. Two rows of knife slots offer an array of options for storing various knives. Hilt rest helps keep knives straight and provides finger space for easy knife removal. Simple Drop-In Installation - Trimmable for customization of various widths and lengths.