Non tilt window Channel balance

A quick learner from California, USA says:
33 4 dw cmc 10
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Casey from SWISCO responded:

Hello,

With this combination of attachments, you could have either an S380-34 or S385-34 channel balance. You’ll need to measure as shown below. The Series 380 has a 1" bottom attachment, and the Series 385 has a 1-3/32" attachment. You'll also need 3340 spring strength options for your replacement balances.

Thank you and let us know if you have any other questions or concerns.

Comparison of the S380 and S385 balance shoes.
Comparison of the S380 and S385 balance shoes.
A quick learner from California, USA says:
Hi

I would like to order two of the

https://www.swisco.com/34-inch-Series-380/pd/Series-380-Channel-Balances/ S380-34 .

Mine has a 1" bottom attachment

I don't know what 3340 spring strength options means.
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Casey from SWISCO responded:

If you go to the S380-34 product page, you will see a list of options that you have to choose from before adding them to your cart. Based on the 33 4 stamp on your original balance, you would need a 3340 strength option for your replacements. 

We are unable to process orders through this discussion board but if you would like assistance with placing your order, you are welcome to give our customer service team a call at (888) 991-1929. 

A quick learner from California, USA says:
Thank you for the clear answer from my first email :) I wasn't thinking straight even though it was obvious. Thanks for your patience. I ordered them online. If these wok out well I will be ordering more for several other windows.
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