Series 377 channel balace 18.5" length

A landlord from florida says:
Looks like I need a series 377 channel balance. But the length of the metal balance is 18.5", which I don't see you listing. Can you make me balances with the 18.5" length?

I believe this is a Panam window, 30 years old. The balancer has 1810 stamped on it.
User submitted picture of <a href='cl/Series-377-Channel-Balances'>Series 377</a>  channel balance.
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Tom from SWISCO responded:
Thank you for posting. Before we can offer an applicable substitute, can you please confirm the length of your balance? Most of our balances come out evenly, not in fractions. Please make sure to only measure the metal channel portion of your balance, and do not include the attachments in your measurement.
A landlord from florida says:
I have remeasured again. I am 10000% sure the metal portion is 18.5" long. This does not include the attachments.
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Donna from SWISCO responded:
Thanks for checking again, we can custom make. I will email you a custom ordering link shortly.
A home owner from Delray Beach, FL says:
Retired construction pro, but never did this !!
I must have just about the same windows as in this post....except the stamp says-- 1820-- and they are exactly 18 1/2 inches ( the metal, not including the attachments) My attachments are exactly the same as those pictured.
The price will determine how many I order...I can just do the few absolutly necessary that are broken or do more windows that are "difficult" but still work, kinda !!
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Donna from SWISCO responded:
Hi Mike,
I will email you a custom ordering link to view pricing. Thank you!
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