Need to know which channel balance and parts to order

A home owner from Florida says:
April 17, 2020
Need 7 sets including the plastic end caps that screw into the window. The only numbers I can find are Unique 28-B-20. I do know that they are 28". We did not measure the width. My spouse can put them in.

Any help will be appreciated. Thanks, Stacy
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Tom from SWISCO responded:
April 20, 2020

Thanks for posting, Stacy. Take a look at our 18-180 top sash guide, I think this is a match for what I see in your photo. 

We can also supply the channel balance, but I'm not sure what to recommend. We use the top and bottom nylon fittings to identify a match, but your photos only show the top fitting. Can you show me the bottom? Can you also tell me its depth? That's the "heel to toe" measurement, assuming that the balance is standing straight up like how it is when installed.
A home owner from Florida says:
May 12, 2020
Thanks for the reply. The "heel to toe" measurement is 30 inches. The depth is 9/16 inches. See Attached bottom pictures.

Please advise on which channel balance to order. Thanks, Stacy
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A home owner from Florida says:
May 12, 2020
Me again. The 30 inches included the plastic clips. Not just the metal. Sorry about that.
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Tom from SWISCO responded:
May 12, 2020

Thanks for getting back to us, Stacy. can you confirm the heel to toe measurement? It should be either 1" or 1-3/32". Keep in mind this is only in reference to the bottom fitting.

You only want to measure the metal channel for length.
1/2" Top Sash Guide
1/2" Top Sash Guide
18-180
$1.67
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