Allenco Channel Balance match Allenco 2740

A quick learner from austin, texas says:
February 9, 2012
I have 4 28" long 1/2" wide 2040 channel balances from 20 year old Allenco aluminum windows that doesn't exactly match any of your pictures. Which one would work?
User submitted picture of stamped 2040 Channel Balance Allenco aluminumwindows.
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Tom from SWISCO responded:
February 9, 2012
Thanks for posting! Before we offer any applicable replacement balances, I just need to know a bit more information about your bottom shoe.

Please refer to the bottom chart and pick out your shoe from the examples provided. Just by eyeballing your picture, I think it might be the 15-001, which would make your balance the Series 390, but I would like you to measure just to confirm.
Diagram on how to choose between the 15-001, 15-002, 15-004, and 15-005 channel balance shoes.
Diagram on how to choose between the 15-001, 15-002, 15-004, and 15-005 channel balance shoes.
A quick learner from austin, texas says:
February 9, 2012
YIKES! I typed the wrong stamp; the channel balance is a 2740 and 28" long and I need 4 of them for two windows.

the bottom attachment does not have wings and is 1 1/8" 15-001

the top attachment does have wings and is 1 1/4"
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Tom from SWISCO responded:
February 9, 2012
Thank you for the information! Can you confirm that the top attachment has wings? Looking at your pictures, it appears not to have any.
A quick learner from austin, texas says:
February 9, 2012
Yes, it has wings that stick out about 1/4" on each side. Thanks.
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Tom from SWISCO responded:
February 10, 2012
Thank you. Based on your description, then, your top attachment would be our 19-005. Please double check that this is the case. If it is, then you would need the S395-21 with the 2040 option.
A quick learner from austin, texas says:
February 10, 2012
thanks so much. what a fantastic site
Channel Balance Top, Winged
Channel Balance Top, Winged
19-005
$0.74
Channel Balance Shoe, 1-1/8" Depth
Channel Balance Shoe, 1-1/8" Depth
15-001
$0.74
21" Series 395 Channel Balance
21" Series 395 Channel Balance
S395-21
$9.38
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