Get a classic companion for your truck bed toolbox. The Extang Toolbox Tonneau Cover accommodates toolboxes between 18" and 21" deep. Boasting all-aluminum frame construction, The Extang Tool Box Tonneau uses nearly indestructible snaps and a heavy-duty leather grain black vinyl tarp to cover, store and protect your valuables while improving your gas mileage. The Extang Tool Box Tonneau Cover employs an exclusive L-Channel for a tight seal and excellent drainage between your box and your cover. The adjustable snaps make using the Tool Box Tonneau easy in any climate condition. The Tool Box Tonneau uses Extang's TuffKlamps for easy, no-drill installation to your truck bed. For carrying large loads, the Tool Box Tonneau features quick release cross bows and a one-hand removable tail rail. Your Extang Tool Box Tonneau Cover is backed by a 10-year warranty on the tarp; the aluminum frame carries a Lifetime Warranty.