Spacious Shelf Organizer: Maximize your space and efficiency in your kitchen with the Rev-A-Shelf versatile 3-tier base filler pullout organizer that takes previously wasted and unusable space and creates a functional organization Pullout Shelf Organizer Specs: Dimensions: 3"W x 23"D x 30"H; Designed for exactly a 3" W x 30" H opening Efficient Pullout Shelf Organizer: Sliding spice rack comes fully assembled and ready to install in between your kitchen cabinets during new cabinet construction; Fillers do not go inside of a cabinet, they install in-between cabinets; Once installed simply attach your matching panel or door Pullout Shelf Organizer Easy to Install: Package includes 1 wood filler and 3 adjustable shelves with chrome rails; Scribe rails are not provided as proper furniture offset of your cabinet(s) must be determined Rev-A-Shelf Difference: A global family-owned company offering holistic, convenient, stylish, and smart organization and storage solutions for kitchens, baths, closets, and whole homes since 1984