Provides powerful reliable performance with quiet operation for those who desire a long-lasting and easy to install chain drive garage door opener; Powerful Performance: 1/2 HP DC motor operates residential sectional garage doors up to 7 feet in height a nd up to 350 lbs. in weight; Safety: Comprehensive Safe-T-Beam system meets or exceeds all UL state federal and CSA regulations and incorporates an auto reversing system that stops and reverses a closing door if anything passes through Genie