This extra shelf can be used in either the regular Quick Vault or the Quick Vault XL. Made of 16ga. steel, powder coated to match both versions of our Quick Vaults (Regular & XL versions) and carpeted to protect your valuables. This shelf fits in the middle section of the Quick Vault & Quick Vault XL to accommodate the locking mechanism. All Quick Vault Shelves can be adjusted to meet your storage requirements. This product ships with mounting screws.