Tilt window balance

We may be able to supply this balance, but that stamp isn't actually a part number. That only tells us the calibration of the spring, and in your case I'm not even sure what that may be; "2735" is a very peculiar stamp that doesn't match any rating system I know of.

Before we go any further, I'd like to get some more data from you. First, I'd like a clear picture of the top and bottom ends of the balance. I also would like to see a picture of the pivot shoe and whatever clip or hook is at the end of the cord. Finally, please weigh the sash on a scale and tell me exactly what you get, down to the ounce.

From there I will do my best to find a good match for you.

I'm sorry for the confusion. I didn't need the weight of the balances, I needed the weight of the sash, which is the glass panel that the balances support. Would it be possible to get that?

As for the balances themselves, I think we can get these after all, but only as a custom order. What we can do is make you our Series 770 tilt window channel balance, but swap out the square terminal clip it comes with for a hook, like our 62-105. Does that look good to you?

At this point all I will need to know is the weight of the sash so that I can calibrate the springs properly. I can then email you a custom order link that will let you add 2 of these assemblies to your cart. We'll alter them as I described here in our shop before we ship them out to you.

Unfortunately, the precise weight of the sash is necessary at this stage. Without knowing that, I have no way of calibrating the spring. These are very particular systems and if the spring calibration is off by even a little, then they will not function properly. Added to the fact that custom made balances cannot be returned for a refund, I cannot in good faith send you a balance without knowing exactly how much weight the springs need to support. I apologize for the inconvenience.