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Single hung spring balance

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Quick Learner from Dublin, CA
Aug 12, 2014 10:33 pm
Hi

We have a non-titling double pane window. Thread of one of the support side channel broke and we need to replace the supporting channel. The channel itself doesn't have any brand name or dimensions. I have attached few snapshots and hopefully you will be able to help me. Thanks


User submitted photos of a window balance.
6 Replies
Tom
Tom from SWISCO
Aug 14, 2014 9:13 am
SWISCO
Expert
Hey, thanks for posting. I've narrowed this down to two possible channel balance Series: either our Series 380 or our Series 385 balances.

Now, as you can see, there is only one difference between these two Series, and that is their bottom shoe. The Series 380 uses the 15-005 while the Series 385 uses the 15-004. I can't quite tell what you have based on your pictures, though. Please carefully compare their dimensions to your own hardware and see which is a better match.
Comparison of 15-004 and 15-005
Comparison of 15-004 and 15-005
I will also need you to confirm the weight of your window sash so that we can recommend the appropriate stamp option, as we do not have a match for 29-9.
Quick Learner from Dublin, CA
Oct 18, 2014 4:40 pm
Hi Tom,

Thanks for your response. I checked the bottom shoe and it looks I will need to go with 15-005. I measured the depth and its 1 inch (same as in 15-005). I have below attached a snapshot of the bottom shoe.

Also I am not sure the weight of window stash. However I know the windows are pretty heavy and are doubled paned.
Tom
Tom from SWISCO
Oct 20, 2014 9:29 am
SWISCO
Expert
Great, glad you were able to find the right shoe. Unfortunately, we cannot recommend a stamp option without knowing the exact weight. We do show a list of each option available for the S380-30, so all you need to do is weigh your sash on a scale and compare it to this list. It is important that you get as precise a weight as possible. We do not recommend estimating.
Quick Learner from Dublin
Nov 15, 2014 3:45 pm
Hi Tom,

Thanks a lot. Finally found time to remove the window and weigh it. It weight about 40 lbs. So I am going to order S380-30 / 2965 stamp.
Paul
Paul from SWISCO
Nov 17, 2014 8:42 am
SWISCO
Expert

To be honest, 2965 may not be enough. It can only carry 39 pounds, maximum. We recommend going with the 2970 stamp option.

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