Spool Rack Spool racks come in two sizes one with three shelves that hold 39 spools of thread $25.99 and one with five shelves for 65 spools, $35.99. The shelves tip out to add or remove spools. These racks mount on the inside of your cabinet for convience storage or on the wall of your sewing room. Small rack measures 19 1/2" W x12"H by 13/4" deep.