Extang Endure ALX - 09-14 F150 5'7" Model 80405Extang Endure ALX 09 14 F150 5'7" Model 80405 From tireless engineering and a relentless pursuit for perfection comes a low profile bed cover designed to function like no other the Endure ALX from RealTruck. With a flush mounted design, the Endure ALX creates a seamless, polished exterior appearance when closed while delivering h ighly functional full bed access when open. The Endure ALX features four patented EnduraShield TPO coated panels, forming a