Checking Interior Dimension:----To properly install, the minimum cabinet opening width should be 18 inch, and minimum interior depth of cabinet should be at least 21.25 inch. This Pullout Drawer Box Actual Width is 17 inch. Drawer slider width total are 1 inch. Fit Ready to Assemble face Frame cabinet B21. each order is One Single set. | Need Assemble: ----Shipped "NOT ASSEMBLED" But is very easy, DIY assemble Drawer box just need 3-5 minutes. No Nail and Glue Necessary. Each order is One Single set. This Cabinet Pull Out Tary is Good for Pantery, Vanties, Under sink. | Natural Wood color Finished:----The Kitchen Drawer Organizer Is Dovetail Joint Drawer Box, Each order is One Single set. | Solid Wood:----This Pull Out Drawer Has 5/8" Thick Solid Wood, and Super Strong 1/4" Thick Plywood Bottom. | 35mm Slider:----This Roll Out Drawer for Cabinet Include 20 Inch Full Extension Drawer Slides ( Side-mounted)