Window counter balance replacement

Question

Hi, I've attached photos of the 2 main pieces of my older counter balances. The windows are double hung vinyl and the counter balances are wearing out and breaking.

Photo window is the center portion, 2 plastic pieces which the 1/4" aluminum rod goes through. One end attaches to the spring, the other to string which is tied into the top plastic piece and also to the pivot lock in photo (window 3). Photo window 2 is the attachment to the top of the window frame, showing the spring with the rod inside it.

Hope some of this makes sense. I know it's older but I need some form of replacement as it doesn't make sense to replace all the windows in the house. Happy to send more photos or anything else if needed. I added a photo of the window's tag. I am unable to determine the manufacturer.

A local supply house (ABC) thought it was Simonton but they said it is not theirs. There is a stamp on the glass, Hampshire Glass Company, a local company. They don't manufacture the windows, just a supplier.

Please help, Thanks Tim

Tom · Accepted Answer

Hey, Tim. We can definitely help with this balance. Now, you have an older rod-type, which isn't a style that's made anymore. However our channel-type Series 775 can be used as a substitute. If you review our pictures, you'll see that it has the same style shoe and installs at the top using a screw, same as yours.

The only question then is length and strength. You'll have to get the length off your old balance (make sure to round down) and weigh your sash to decide these attributes. Let me know if you need any help!