Paul from SWISCO responded:
October 21, 2016
Thanks for posting, Claudia. Your pivot shoe looks like our 15-111. As for the spring itself, I think you could have either our 3/8" wide Series 165 coil or the 1/2" wide Series 160 coil. See what you think. You can use the numbers printed on your existing spring to confirm the proper option for either.
|
Tom from SWISCO responded:
October 28, 2016
If your sash weighs 18 pounds, and was supported by four balances altogether (two on each side), then I recommend the S160-4. Each of these can carry 4.5 pounds each.
|