35 lb sash

Quick Learner from Michigan

Jun 16, 2019 11:26 am

I have a sash that when the glass gets replaced will be about 35 lbs. The existing coil balances are a pair of 7 lb coils on each side for a total of 28 lbs. How do I get to 35 lbs if your coils are only up to 8 lbs each? (I am referring to your S190 series)

6 Replies

Bob from SWISCO

Jun 18, 2019 9:30 am

Thanks for writing in. Are you sure you have the Series 190? We could use pictures of the pivot shoe and balances, just to make sure we can recommend the right hardware. Many thanks.

Quick Learner from Michigan

Jun 20, 2019 10:10 am

Here are the pics.

3 user uploaded images

Bob from SWISCO

Jun 21, 2019 8:41 am

OK, so to support your window sash, you are going to need to use coil springs that support 9 lbs of weight individually--if you have two per each side of the sash, that would equal 36 lbs of support, which is close enough to your window sash's weight. We don't currently have 9 lb spring weights for the Series 190 in stock, but fortunately we can get these in for you. Give us time to get these in stock, and we will let you know as soon as they are online. Many thanks!

Quick Learner from Michigan

Jun 22, 2019 11:10 am

Thanks for your help. I will wait to hear from you that they are available.

Bob from SWISCO

Jul 3, 2019 10:52 am

Good news! The S190-940 9 lb Coil Balance springs are now in-stock! Again, to support your 35 lb window sash, we suggest you use two of these coil springs on either side of your sash, for 36 total lbs of support. Let me know if you have any other questions, and thanks again for reaching out.