Need replacement for window accessed on both sides.

A quick learner from Lahaina, Hawaii says:
December 2, 2016
The ribbed channel of our current balance is 32 1/2" L x 1/2" W x 5/8" D. Looks like your s751 balance but window is non tilt. Window is essentially a room divider that can be opened from either side.
User submitted image of their window hardware.
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Paul from SWISCO responded:
December 6, 2016
Thanks for posting. The Series 751 does look like a match, but your length is a little confusing. Based on your stamp, the metal channel by itself should only be 31", not 32-1/2". Can you confirm? Can you also tell me the weight of your sash?
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Paul from SWISCO responded:
January 17, 2017
Thank you for submitting your sample. We just received it. The length is indeed 32.5", which m eans it will have to be custom made. I'm not sure about the spring strength, but I think it may be best to go with the 32R option for sashes weighing 15 through 24 pounds. Can you confirm? Can you also tell me how many you need?
A quick learner from Lahaina, HI says:
April 24, 2017
Hi Paul, I will need a minimum of 8 to complete the order. Also the weight is accurate at 15 lbs. Thank you.
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Tom from SWISCO responded:
May 5, 2017
Thank you again for waiting. After working on this, we finally have everything put together and are ready to make this balance for you. It was a tough one, but we finally got a solution. I will email you a custom link for 8 of these right now. Please keep in mind that the S clip is sold separately, but the balance will have a rivet to accept it.
Short S-Clip
Short S-Clip
19-029
$0.65
Long S-Clip
Long S-Clip
19-030
$0.70
Classifying Channel Balance Fittings
Classifying Channel Balance Fittings
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