29" x 3/8" tube red tip

A quick learner from AZ says:

Hi, I'm wondering if the series 306 will work. The shoe is slightly different.

Thumbnail of the uploaded file named 29 inch x 3 8th red tip series 306 sash balance.jp
A quick learner from AZ says:
I see now, that my feet are the 15-142. The spiral length is 1" past the tube. It for two each, non-tilt windows, for a total of four balances. the house was built in 2001.
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Tom from SWISCO responded:

Hello! Looks like you did all the homework for me already. Thank you very much for the detailed information, I wish everyone were as diligent. I'll email you an order link and price quote for the requested balances right now. 

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