Non-tilting window channel balances

A quick learner from San Juan Capistrano, Ca says:
May 28, 2020

I need 2 different lengths and weight tolerances. The first ones are1/2 in wide and 34 inches long with wings and have 33 3 CO Caldwell printed on the side. The second ones are the same width with wings and are 28 inches by 1/2 inches and have 27 4 FP Caldwell printed on them. I tried but can't figure out exactly which ones I need since some are very close. I sent pics of the ends so maybe that will help. I also sent a pic of a nylon thing on the top side of a window that is broken. Also a lock. It is white and is 2 and 1/2 inches long

And one inch deep and about 1/2 inch high. I need to redo 8 windows. Thanks Stella

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Bob from SWISCO responded:
June 1, 2020

Hey Stella. This looks like either an S380-34 or S385-34. The only difference between these two balances is the 'depth' of the bottom nylon shoe, so compare both with your old hardware to see what matches best. You will need a stamp option of 3330. For your Top Sash Guide, see if the 18-171 matches what you need.
A quick learner from San Juan Capistrano, Ca says:
June 12, 2020
Thanks Bob. Just one question. Which part number do I need for the balances that say 27-4 hp and are 28 inches long? Thanks
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Bob from SWISCO responded:
June 12, 2020

Apologies for missing that. If they have the same nylon fittings as the 34" balances, then either the S380-28 or S385-28 will do, again depending on that bottom shoe depth. A stamp option of 2740 will be needed.
34" Series 380 Channel Balance
34" Series 380 Channel Balance
S380-34
$11.73
34" Series 385 Channel Balance
34" Series 385 Channel Balance
S385-34
$11.73
Stepped Sash Guide, Alpine
Stepped Sash Guide, Alpine
18-171
$1.35
Truth Window Lock, 2-1/16"
Truth Window Lock, 2-1/16"
90-077C
$5.47
Face Mount Keeper, 7/16"
Face Mount Keeper, 7/16"
90-257
$1.93
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