Classic Soft Roll Up Tool Box Tonneau Cover Fits 8 ft. Bed;For use with any 20 in. Standard Toolbox;Type: Snap Soft Roll Up; Installation Time: 20 Minutes; Mounting System: No Drilling, No Damage Pin. Style TuffKlamps; Material: Aluminum Rails with Vinyl Tarp; Shipping Method: UPS; Warranty: Lifetime Frame & 10 year Tarp CHEVROLET GMC SIERRA 1500 SIERRA 2500 HD SIERRA 3500 HD SILVERADO 1500 SILVERADO 2500 HD SILVERADO 3500 HD BASE DENALI HIGH COUNTRY LS LT LTZ SLE SLT WT 2014 2015 2016 4.3L LV3 (262) Vortec 5.3L Ecotec3 L83 (325) 6.6L Duramax Turbo Diesel LML (400) 6L GEN IV CNG LC8 Vortec (364) 6L GEN IV Flex L96 Vortec (364) 6L GEN IV Flex LC8 Vortec (364) 6L GEN IV L96 Vortec (364) 6L GEN IV LC8 Vortec (364) CNG DIESEL FLEX GAS with Toolbox Compatible Extang Extang Classic Soft Roll Up Tool Box Tonneau Cover - 32455 32455 Tonneau Cover