Need help on channel balance and sash guide

A home owner from 34953 says:
November 14, 2019

The house was built in 1998. I have checked and cannot find any markings except "CALDWELL". I also need the plastic piece the fits on top of the movable window and sits in the window channel. and is attached with a screw Any assistance will be wonderful. Thank you in advance

Paul

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A home owner from 34953 says:
November 14, 2019
Here is a few pictures of the top channel plastic piece I need.

Thanks again
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Paul from SWISCO responded:
November 15, 2019

Let's start with your balance. It looks close to our Series 390. Take a look and see what you think. You would need to measure the depth of your bottom balance shoe and compare it with ours to confirm this is a match. If it is a match, measure the metal length portion of the balance to determine the length of balance needed. Since there is no stamping on the balance, you will need to weigh your sash and refer back to the sash weight chart listed on the product page. As for the top sash guide, our 18-166 is worth considering. Look it over and let us know if you have any other questions. 
29" Series 390 Channel Balance
29" Series 390 Channel Balance
S390-29
$11.10
5/8" Top Sash Guide, Kinco
5/8" Top Sash Guide, Kinco
18-166
$1.33
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