Choose Simple: Extang's redesigned soft tri-fold cover has a host of new features yet remains the easiest to install and simplest to use. The newly redesigned Trifecta 2.0 Toolbox Series works with an existing standard 18-20" toolbox. Designed, manufactured and assembled in the USA! Your choice in soft tri-fold covers is still simple!\nTrifecta Toolbox 2.0 Tonneau Cover; Black; Leather Grained Vinyl; 2020-2021 Chevy Silverado/GMC Sierra 2500 HD/3500 HD 6' 9" Bed without Factory Side Storage Boxes\nWill NOT fit with factory side storage boxes\n2020 Chevrolet Silverado 2500 HD 82.2 Bed Without Factory Side Storage Boxes, 2020 Chevrolet Silverado 3500 HD 82.2 Bed Without Factory Side Storage Boxes, 2020 GMC Sierra 2500 HD 82.2 Bed Without Factory Side Storage Boxes, 2020 GMC Sierra 3500 HD 82.2 Bed Without Factory Side Storage Boxes