will not work w/ Trail Edition models 5' 7" Bed (66.7")

Fits 2007 - 2021Gmc / Silverado/cargo management system, will not work w/ Trail Edition models 5' 7" Bed (66.7"). Holds up to 300 pounds of evenly distributed weight TOUGH TRUCK BED PROTECTION | The Gator EFX Hard Tri-Fold is constructed of heavy-duty aluminum panels that automatically lock when closed. Panels are coated with a scratch-resistant, UV-protective, black powder coat finish EASY INSTALL & LOW-PROFILE DESIGN | The EFX tonneau cover can easily be installed in less than 30 minutes, without the use of tools or need for drilling. EFX sits flush with your truck bed, providing a stylish low-profile look WEATHER PROTECTION | Gator EFX provides an integrated water management system to keep the rain, snow, dirt and dust out of your truck bed. EFX's unique seal design channels the element out of your truck bed, providing superior bed protection WARRANTY 6month| The Gator EFX Hard Folding cover is backed by warranty, 6 month and is supported by our US-based customer service team. If anything goes wrong with your cover, our tonneau cover experts are at your service and ready to help!