This Sentry CT fits the 2007-2021 Toyota Tundra with the 5'7" box (66.7"), Toyota's 5.5-foot short bed, on trucks without the factory deck rail system. If your bed has the deck rails, order the deck-rail version instead. Under the RTxTechWeave canvas is a row of interlocking aluminum slats, which makes it a hard roll-up you can still roll right up to the cab. On most trucks it goes on with clamps alone, no drilling. Its load rating is 400 lb, evenly distributed, with the cover closed. If the tailgate has a key lock, it secures the cover as well. A 5-year TruXedo warranty comes with it.