33 in Window channel balance for pull-up windows

A landlord from Moorpark CA says:

I need to order 6 complete assemblies with top & bottom shoes. Here is the channel info.

Window Sash (Spring loaded) channel balance for ALUMINUM Pull-UP WINDOWS

SINGLE HUNG

PART #3250 BSI MD

33 IN LENGTH

9/16 IN CHANNEL WIDTH

5/8 IN DEPTH

Number stumped on the part is 3250 BSI MD

The original window company is ABC window co Ontario ca Installation was done in 2001. Hopefully all this info with the addition of photos can identify the correct part #. Thanks George 805-551-6751

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Casey from SWISCO responded:

With this combination of attachments, you could have either an S380-33 or S385-33 channel balance. You’ll need to measure as shown below. The Series 380 has a 1" bottom attachment, and the Series 385 has a 1-3/32" attachment. You'll also need 3250 spring strength options for your replacement balances.

Thank you and let us know if you have any other questions or concerns.



1
A landlord from Moorpark CA says:
It is 1 3/32 in. So I ordered 6 0F S385-33 option 3250.

Thanks
George
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