repair strut parts for garage doors strut u bar 2 1 4 24 ga for 9 wide garage doors reinforcement struts garage door struts 8 9 16 18 opener reinforcement bracket kit clopay garage door reinforcement u bar supporting your garage door anderson garage door struts clopay garage door opener reinforcement diy garage door strut 16 foot wide garage door struts strut or replace my garage door section garage door sagging in the middle here