Omega National KitchenMate Base Pantry Filler, 3 inch W x 30 inch H by National. $125.78. Add extra storage space to your home by installing these unique KitchenMate Base Pantry Filler by Omega National. Featuring slides, adjustable shelving and a magnetic push catch, these fillers are constructed of solid maple and plywood and are available in 3 inch or 6 inch wide base applications. Front filler board and rosettes are sold separately. Ships via USP/FedEx Ground.