Trying to find correct balance

A quick learner from Colorado Springs says:
I tried to match the parts to one on your website and am having difficulty. It's a non tilting single window and I need to replace both channels on either side. There's a 25 stamped on the side of it and a small hook at the very end by the string. Measured from the tip of the plastic shoe to the tip of the other plastic end it's 27 inches so I'm not sure what the 25 means.
User submitted photos of a window balance.
Profile picture of Tom
Tom from SWISCO responded:
We should be able to replace this. However, it's a special kind of balance that needs to be custom made. Before we begin, can you just tell me how many you need? Once we know that we can send you the appropriate information to order, including a price quote.
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