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GARAGE DOORS UP CLOSE
21| The torsion spring is also supported by a center bracket.
22| Attaching this reinforcement bar ensures the top panel will stay flat and rigid when lifted.
23| Winding the torsion spring requires using 18-in. winding bars made from 1/2-in. diameter cold rolled steel (not a typical toolbox staple). Notice the drums on each end that carry the cable up to the spring. Because of the high-degree of tension applied to the spring and the potential for injury, most manufacturers recommend this step be done by a professional.
Warning
BECAUSE OF THE HIGH-DEGREE OF TENSION APPLIED TO THE SPRING AND THE POTENTIAL FOR INJURY, MOST MANUFACTURERS RECOMMEND THIS STEP BE DONE BY A PROFESSIONAL.