ESI ROK BLOCK 4.25" Tailgate Gap Cover and Ultimate Tailgate Seal with Taper Seal 5 1/2' for Sidewalls Both EPDM rubber seals eliminate dust and water from entering through the tailgate gap and sidewalls when using a truck bed Cap or Cover. Adheres to all surfaces including spray on bed liners 4.25" width ROK BLOCK covers the tailgate gap and eliminates debris from falling into the tailgate gap when hauling material. Doubles as a tailgate seal for the tailgate gap. ROK BLOCK saves time when hauling material and prevents damage to tailgate 5ft Ultimate Tailgate Seal with Taper Seal installs on the sidewalls Also available 7" width ROK BLOCK XL and Tailgate Seal with Taper Seal (ASIN: B076NFYH2R)