Sash Channel Balance Identification

A quick learner from Venice FL says:
Existing Marking: 36-4 AA CMC 11
Per your website the end pieces appear be 19-005 top (winged) and 15-002 Foot (not winged)(which has the dimension of 1 3/32" Length is 37". None of the web identifiers show those two parts together on a balance. Thus my confusion.

Can you verify what the correct replacement part number is based upon the existing marking. This window is about 7-9 years old.
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Tom from SWISCO responded:
Good afternoon, and thanks for posting. You're absolutely right, this attachment configuration does not match any of our standard balances. It will have to be custom made. To begin, take a look at this Custom Channel Balance Form that I have started for you according to your specifications. Once you fill out the rest of the information, one of our representatives will get in contact with you shortly thereafter.
A quick learner from venice fl says:
I verified my numbers and saw a mistake..the printed number is actually 36-9 AA CMC 11. I don't know if this makes a difference.
Seems funny to me that a very standard window that is 1300 homes in my neighborhood alone would have a custom Sash balance in some 13000 plus windows...
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Tom from SWISCO responded:
It happens more often than you'd think. The reason why these attachments have wings is because they need to steady the balance in the jamb. However, for whatever reason, there may be an obstruction in the jamb near the bottom attachment for your window, which means that wings would only get in the way and prevent the balance from operating correctly.

Thank you also for verifying your stamp. We'll may have to re-think that custom order form, so sit tight on that for now. Can you weigh your window sash for me? We do not have an option that corresponds with a stamp of 36-9, and I need to know what kind of weight these balances will be lifting.
A quick learner from venice Fl says:
One is about 24 lbs the other is about 30 lbs.
That could be the discrepancy in the balance numbers . I may have looked at two different windows...

I just checked the tracks and they are unobstructed and symetrical in width and depth top to bottom. I think the winged shoes would fit OK on the bottom if the work On the top.
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Tom from SWISCO responded:
It's ultimately up to you. Personally, I'd go with whatever the original installers used. They may have had a reason for choosing the hardware they chose that would only make itself apparent once the hardware is installed.

If you want to go with a non-winged bottom shoe, take a look at this Custom Channel Balance Order Form that I have started for you. I've given it a 3640 stamp option, as that will support a window sash weight of 23 through 30 pounds. I think this should cover both of your sashes.

Otherwise, you can take a look through our Non-Tilt 1/2" Wide Channel Balance Section and see if you see an attachment combination you'd prefer. Again, though, I highly recommend sticking with what you have installed now.
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