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This part is no longer available. No alternate or substitute part has been recommended by the manufacturer.

Part information

This manufacturer-approved curved door arm (part number 178B23) is for garage door openers.

Curved door arm 178B23 connects the door bracket to the straight door arm, which connects to the trolley.

Follow the instructions in your owner's manual or installation guide when installing this part. Wear work gloves to protect your hands.