For premium Marantec garage door opener parts and accessories, we have what you need at Garage Door Supply Company. The authentic Marantec garage door opener products we carry are engineered and manufactured in Germany. The quality is so superb; these doors, parts and remotes carry lifetime warranties. Our Marantec replacement parts will help you maintain your Marantec model door operator as one of the world's quietest garage door openers. We also carry new German-made Marantec Synergy 270, Synergy 370 and Synergy 380 garage door openers for 7-foot and 8-foot doors.