Window Spring Balance Replacements

Question

We need to replace 6 spring balances in our IWC windows, but they are not supplying these any longer.

Can you provide these that will be compatible and at what cost for 6 springs?

The part numbers in the photos are for the original and also for replacement springs, both of which fit. However, if there is a unit that is "one strength less", that might be more suitable since the springs we have tend to lift the window by themselves. They are not "balanced" to the weight of the window, rather they are a bit too strong.

Thank you

David

Tom · Accepted Answer

Thanks for posting, David! Just to clarify, you only need one type of balance, correct? Based on your pictures, it almost looks like you have two different types. Your last two pictures show a balance setup like our Series 377, however your second photo shows a different kind of shoe. Can you confirm? Are the balances shown in your second picture the replacements you mentioned?

Assuming your last two photos show the original, I'm confident our Series 377 will work. You mention trouble with the spring strength, though. Can you tell me the exact weight of the sash these balances are supporting? That will tell us beyond any shadow of a doubt what strength you need.