My Windows have no Balances

A quick learner from medford oregon says:
i have 4 windows with no channel balance...window is 36? x 30?...double pane aluminum frame...only bottom slides up and down...total window is 72? tall...what channel balance do i need...thank you mike
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Bob from SWISCO responded:

Hi and thanks for posting. As things stand it will be very difficult to identify what balances you need without seeing one of them. Is there any window in the building that still has them? If not, could we have a picture of one of the windows? We will see if they can glean any clues from that. Thank you.

A quick learner from medford oregon says:
Hi Bob...it's a rental unit...no other windows with the balances...headed there this AM and will take pictures...tx Mike
A quick learner from medford oregon says:
photos
A quick learner from medford oregon says:
more picks
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Paul from SWISCO responded:

It looks like our 10-008 top sash guide and our Series 385 Channel Balance for the windows. To narrow down the balance options further, we will need the visible glass height of the sash and the weight of the sash. Thanks. 

A quick learner from medford says:

window weighs 15lbs
glass is 25 1/2" wide...frame is 27" wide
glass is 27" tall...frame is 29 1/2" tall
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Paul from SWISCO responded:

Thank you! The length of the metal channel is typically 1" longer than the height of the visible glass. With that in mind, we would recommend our S385-28 with a 2730 option for your 15 pound sash. I want to stress that we cannot guarantee that this will work without seeing your original balance, but this is our best educated guess. Look it over and see what you think.

A quick learner says:
thank you for your help...ordered 2 S385-28...2730...enough for 1 of my 4 windows...if it works I'll be ordering enough for the other 3 windows...mike
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Paul from SWISCO responded:

Awesome, thank you! We appreciate your business. Please let me know how they work out.

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