Which option to choose

A quick learner from Hillsboro says:
I have taken out one of the channel balances from my sliding up and down window and carefully matched it to the 21" Series 380 Channel Balance pictured above.

However the only numbers stamped on the balance are as follows: "20 4 EU CMC 2". How do I choose which option to buy? Does the 20 4 indicate it is option 2040?

The window is approximately 12 years old and the right channel cable broke causing the channel balance to fall to the bottom of the channel which is causing difficulty in removing the sash to get access to the other channel balance. Any tips to remove the sash from the window in this situation would be greatly appreciated.

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Paul from SWISCO responded:
Hey, Gary, thanks for posting. With a stamp like 20 4, then I also think the 2040 is a good match. You may want to weigh your window sash just in case.

As for removing the sash with a broken balance, you should be able to do it the same way. With the one balance out of the sash, first look up and follow the window track. You will see a take out clip that looks like our 16-002. Pop each of them out. Now carefully raise the sash, leaning to the side that only has one balance intact, and bring it up past those take out clips. That should disengage the balance and release the window sash, even though one side is busted. Check out the video below for more information.
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