This Heavy Duty Storage Box is the highest quality, most competitively priced cardboard storage box on the market today. They are constructed of white 275# corrugated cardboard. Use this box to protect and store all your collectible records. Assembled Dimensions Box and Lid: 18-1/8" x 8" x 8-7/8" Box Only: 17-3/16" x 7-3/4" x 8-13/16" Lid Only: 18-1/8" x 8" x 2-3/8" Internal Dimensions 17" x 7-1/2 x 8-3/8"