The LiftMaster 8557W garage door opener is designed specifically for heavy-load doors and reinforced doors in high-wind areas. It's equipped with a popular AC motor and can lift even the heaviest garage doors effortlessly and with precision. LiftMaster 8557W comes with MyQ technology, Security+ 2.0, Electronic Limit and Auto-force, giving you powerful yet quiet performance. It's a replacement operator for the old 3585 3/4 HP AC Belt Drive.
Liftmaster 8550 is a belt-driven garage door opener. Unlike many of the cheaper chain-drive units ...read more