I need 2 Alcan window balancers

A home owner from Sarasota, Fl says:
January 19, 2024
I need 2 Alcan window balancers: 18" long, 5/8"deep, 9/16"wide, with bottom shoe 15-029, top 19-005. And 3 locksets 90-180.
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Emily from SWISCO responded:
January 22, 2024

Thank you for reaching out to us! Sure, we can help with this. The balances will just have to be a custom order since it isn't a balance configuration that we stock. Can you tell me the stamp printed on the metal channel? I can draft a price quote once I have that. 
A home owner from Sarasota, Fl says:
January 22, 2024
The number stamped on the balance is;
1720 B.S. I.
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Emily from SWISCO responded:
January 22, 2024

Great, thanks for confirming! I'll email you a purchase link for (2) 18" balances with the 19-005 top, 15-029 shoe, and 1720 stamp that you can use to place an order on our website. Please note that the locks are not included in this link so don't forget to add your needed quantity to your cart separately. There is a 5-6 week lead time as well. 
Winged Channel Balance Shoe, 7/8" Depth
Winged Channel Balance Shoe, 7/8" Depth
15-029
$0.82
Channel Balance Top, Winged
Channel Balance Top, Winged
19-005
$0.74
Window Sash Lock, 2-1/4"
Window Sash Lock, 2-1/4"
90-180
$2.97
How to Replace a Channel Balance Attachment
How to Replace a Channel Balance Attachment
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Classifying Channel Balance Fittings
Classifying Channel Balance Fittings
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