I need a balance for my Gapco windows

A home owner from De Soto MO says:
March 29, 2012
This my first time to your site. I have Gapco series 300 windows. I see that you carry parts for series 350 and up.
can I use 350 parts on 300 series or do I need to special order parts for 300. My windows are non-tilt 1/2" 26" .
Thank you for your time.
Ben
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Paul from SWISCO responded:
March 30, 2012
Thanks for posting, Ben, and welcome to SWISCO.com! Are you trying to replace the channel balances in your window? If so, the Series of your window has no relation on the Series of channel balances listed on our site, which are designated by us and for use on our site alone.

The best way to identify what replacement channel balances your window needs would be to remove yours from your window and take a few pictures of their attachments for us to identify. We will also need to know the length of the metal channel and what any stamps or markings read. For more information, please see our video tutorial on how to identify your replacement channel balance.
A home owner from De Soto MO says:
March 30, 2012
Thank you Paul for your quick reply. Yes I am going to need to replace several window balances.
Looks like I have a 25" channel stamped 2430. I will attach pictures of both ends.
I will need to order 10 at this length and some shorter later.
Thank you
Ben
A customer submitted photo of channel balance attachments.
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Mike from SWISCO responded:
April 2, 2012
Thanks for getting your pictures to us, Ben.

Please take a look at the S390-25 Channel Balance with the stamp option 2430.
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