Need correct window balance.

A quick learner from Manteca Ca says:
Good day. I have this window in my room that slides up. It has been missing the balance to hold it up since I bought the house. The window itself measures 22x24. I would like to fix it but don't know what kind of balance I need. The window side measured a little over 1/2 in as described in the parts selection. Please let me know if you can help identify the correct balance.
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Bob from SWISCO responded:

It looks like you need non-tilt window channel balances. We might be able to help narrow this down for you, but we'll need a little more information to do so:

  • Please tell me the height of visible glass in this window sash. This will help us determine the balance length needed. 
  • Please give me the exact weight of the window sash. Placing it on a bathroom scale will suffice. 
  • Is there another window of the same size or similar in the house with the balances intact? If so, please remove one and show pictures of the nylon fittings on either end, as well as any stamp code on the metal channel. 

From there, I'll do my best to find what you need. 

A quick learner from Manteca Ca says:
Hello and thank you for the reply. The window portion measures 20 inches by 22 inches. the window sash weighs 13.4 lbs. I don't have a similar window to compare to. I also could not find a stamp code.
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Bob from SWISCO responded:

Unfortunately, without seeing another balance I have really no way of knowing what type of balance you need. I can tell you it should be 21" long, and that it will use a stamp option of 2030 (for a sash in the weight range of 12 through 15 pounds), but it gets very uncertain after that. That said, a similar window here used the Series 390 Channel Balance. So it's possible you need the S390-21, with a stamp option of 2030. Again, this is entirely an educated guess; I can't make any guarantees. You could always try the balances, then return them if they don't work-see our Return Policy here.

A quick learner from Manteca Ca says:
Hello and thank you for the information. As far as additional hardware what else would I need? I attached images of the window frame. One side has a metal tab and the other does not. I am willing to try the recommended parts but need to know if anything else is needed.
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Bob from SWISCO responded:

See if the 16-002 matches the Take-Out clips you still have. Also make sure your Top Sash Guides are intact--I believe you have the 18-008, but show me closer pictures if you're unsure. The video below shows how to replace channel balances. 

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