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Question on proper balance length to order

A home owner from USA says:
I have 20lb Milgard non-tilt-out windows. I believe I have identified that I need S385 with the 19-005 top and 15-004 shoe. The metal section measures 32-3/4 in length, so I'm not sure whether to order the 32" or 33" length. If I use the 33" length then I need option 3230. If I order the 32" version, I think I need option 3130

I have enclosed pictures of the top, shoe, length, and markings. The shoe is 1-1/8" deep, hence the selection of 15-004 rather than the S380 with 15-005.

What do you recommend for my choice of length, 32" or 33"? The 15-004 shoe looks a little shorter than the shoe in my picture, So maybe the slightly longer 33" channel will be the right choice?
User submitted photo of their window balance.
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Tom from SWISCO responded:
Hey, Vito. This is not our Series 385. This is actually a special balance that we will have to custom make for you. Can first tell me how many you need? Once I know the quantity, I can send you a custom ordering link.
A home owner from USA says:
Thanks for the response. Please send me a quote for 5 pairs (10 total). Since this is custom, do you have all the info you need or do I need to send any other pictures or measurements?
Profile picture of Tom
Tom from SWISCO responded:
Nope, we have everything! I've emailed you a custom link. Let me know if you need anything else!
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