Our pull our drawer are designed to be compatible with standard RTA (Ready-to-Assemble) cabinets. Therefore, the dimensions mentioned refer to the internal width of the cabinet. If your cabinet is not an RTA cabinet, please measure the internal frame width of your cabinet instead of the external width.\n\nThese Pull Out Draws Were Easy To Install. Comes With Everything You Need. Good Quality. Very Durable. this Cabinet Pull Out tray is Good for Pantry, Vanities, Under sink.