Superior strength, lightweight polyethylene. Tongue and groove construction for maximum strength and seal (sealant included). Burgundy velour lined interior to add elegance and visual appeal. While our standard is larger than most in the industry, we also offer and economical riser to create an additional 2" vault height. Risers sold individually. Description: Guardian Vault Dimensions (Top): 14.25" x 10" x 10.625" Dimensions (Bottom): 12.75" x 8.75" x 10.625" Capacity: 975 cu. in.