The Trifecta Toolbox accommodates an 18-20 inch toolbox and includes a toolbox mounting rail which easily bridges the tool box to Tonneau for a perfect fit. The L-channel design rail also provides for a weather-tite seal against the toolbox. Featuring fast and easy installation with no assembly or tools required. Extang’s exclusive SpeedKlamps provide instant access to the truck bed or to quickly convert Trifecta to its folded open position to haul cargo. SpeedKlamps are made from fiberglass filled nylon for the ultimate in strength and operate with spring-action technology for easy fastening and release. The clamps conveniently stow away into the frame when not in use. The cab section secures by simply hand tightening the threaded clamp with built-in heavy-duty T handle. The fabric is constructed of heavy duty commercial grade vinyl with leather grain for great looks and sewn-in binding for the ultimate in wear protection. The heavy duty luggage-style Hold-Tite fasteners are quick and easy to use and adjust. The Hold-Tite straps and snaps combination allow the tonneau to be fully open and safely secured at the cab while driving. Extang’s MaxHinges, also made from fiberglass filled nylon, provide double pivoting with center link and padded seals. Trifecta provides the strongest frame of a soft folding cover in the industry. Construction starts with commercial grade extruded aluminum perimeter rails connected by I-beam design Monster Bows which are connected to the frame by steel brackets. Bracing the frame corners are 45 degree steel brackets that provide unparalleled strength. The frame is completely painted to ensure corrosion resistance and great looks. Finally, the frame is sealed with OEM style foam seals like that found in the door jamb of your truck ensuring that every opening and closing of your cover provides a perfect seal on your truck bed. Extang has been manufacturing America’s number one selling pickup truck bed tonneau covers since 1982.