Cranked arm door gear suitable for doors weighing up to 130lbs. This mechanism is ideal for narrow doors to allow a car to fit inside, as the cranked arm increases the amount of space for the wing mirrors.

• Standard arm: for doors which are 6'8" - 7'5" high.
• Short arm: for doors which are 6'0" - 6'7" high.

Retractable garage door gears are also ideal for use with electric openers.