The sash is heavy

A quick learner from Miami says:
Hi Dear, I have a pair of channel balance need to be replaced. they are from a tempered glass window. Lenght = 27" (metal channel).. I have determined quite sure that your 380-27 will fit my need (the stamp read as 26DS....) But the sash is too heavy, it is 40 Lb. Do you have any suggestion for me ? THANK YOU !!
User submitted photos of a window balance.
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Paul from SWISCO responded:
I think we should be able to help. I would confirm the size of your shoe, though. This looks like it could be our S385-27 channel balance. Let me know if that's closer.

If so, we can custom make you a S385-27 channel balance with a special 2680 option. I just need to know how many you need and I will send you a custom order form and price quote.
A quick learner says:
Thank you Paul, I have double checked the measurement and confirmed that its 385-27 . I need 2 of them ...for 40 lb sash
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Tom from SWISCO responded:
Great! I'll email you a custom order form and price quote for this special balance. You should receive it shortly.
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