Replacement window balance

A home owner from mesa az says:
I need to replace the balance on my window. the window is about 23 years old. the length without the end pieces measures 29". the window its self is 47" wide X 30" tall.T stamp is not visable on the part.
User submitted photos of a window balance.
Profile picture of Tom
Tom from SWISCO responded:
Hello! Start by looking at our S351-29 channel balance. This appears to be a match, but just make sure that the depth of your bottom shoe is the same as the one that comes with our balance. It should be 1". If it's not, let me know what it is and we can find something better.

Without a stamp, it will be slightly more difficult to choose a corresponding option. Fortunately, we have a handy chart on the S351-29 store page that shows how much weight each option we provide can support. All you need to do is weigh your sash on a scale and refer to this chart.
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