Need replacement spring - no number




Your pivot shoe is an older version of our 15-180. Although yours isn't made anymore, the more modern style we carry should work fine. We also sell the Series 190 coil spring to go with it.
Since there's no stamp on the old spring, I will need you to tell me the exact weight of the sash. I'd also like you to confirm that you only have one spring on each side of the window. That's the only other way to determine what Series 190 option will work.




Thanks! In that case I recommend the S190-940. These carry 9 pounds each for a total support of 18 pounds, which should be fine for your sash.




Yes, I think that would be a good idea in this case.