A home owner from Philadelphia, Pa says:
June 30, 2016
I have previously ordered window parts from Swisco over the past years.My window sash weighs 18.37 lbs approx. & has a S160-9 coil balance spring with the 15-111 pivot shoe & 15-150S single support installed with it. Because the springs have broke previously can I install a 10 LB. coil spring instead of the 9 LB. S160-9. If so what are the part numbers for that coil balance spring & the corresponding pivot shoe & single support, Thank You.
Paul from SWISCO responded:
July 1, 2016