Rev-A-Shelf helps to maintain shelf space and keep spices within reach. The Rev-A-Shelf 4SR wood door mount spice rack series is best in class. Easy to install and all hardware Included:.-Included: (1) Wood spice rack with Chrome rails and mounting hardware-Product is designed to hold standard spice bottles (2.25")-Designed for a standard 30" tall wall cabinet.-Requires a minimum opening of 11-3/4"-7" height between the shelves-(3) Fixed Shelves-Door mount brackets: Adjustable door mount brackets are Included: and required for operation-Construction: Fully Assembled Maple Wood construction with a clear coat finish for durability-Mounts to cabinet door with only (4) screws