What is the purpose of the brace installed during a garage door operator setup?

The purpose of the brace installed during a garage door operator setup is to keep the motor unit from moving laterally. This lateral stability is important because it prevents the motor unit from shifting or vibrating when the garage door is in operation. Keeping the motor unit secure ensures that the door operates smoothly and safely, reducing wear and tear on both the motor and the door mechanism. A properly braced motor provides consistent performance and helps prevent mechanical failures, which could lead to safety hazards or the need for costly repairs.

Options discussing aesthetic appeal, manual operation assistance, or strengthening the door against weather do not address the primary function of the brace, which is related specifically to the stability of the motor unit during operation.