Vinyl window balance

A quick learner from Manahawkin, nj says:
This is what came out of my friends window and although what I see on your sight is very similar, nothing is exact and I don't want to order the wrong thing. The stamp read 2601 and the part measures 26"x9/16"x9/16".
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Tom from SWISCO responded:

In order to determine which stamp option you need, you will need to remove the bottom sash from the window and physically weigh it on a scale.

Once we have that weight, we will be able to determine which stamp option you need and get you replacement balances.

How to replace a tilt-window channel balance.
How to replace a tilt-window channel balance.
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