The Liftmaster S505AL Monitored Resistive Edge is a 5ft aluminum channel designed for LiftMaster and Chamberlain garage door openers. This profile resistive edge is equipped with monitoring capabilities for added safety and security. The aluminum material ensures durability and reliability, while the 1-year manufacturer warranty provides assurance of quality. Perfect for use in garage doors and openers, this Liftmaster edge is a dependable choice for ensuring smooth and safe operation within your home.