Channel Balance & Top Sash Guide

A quick learner from USA says:
March 13, 2017
Need help with the following:

Channel Guide
Model - 28DS 42
Width - 9/16
Depth (less shoe & top) - 5/8"
Length (less shoe & top) - 29"

Top Sash Guide
see dimensions on photos

This is for the bottom sash of a double hung window aluminum frame window. 51" wide, double pane and pretty heavy. The original channel guides only lasted about 5yrs with minimal use. Both are shot. One of the top sash guides is wasted as well
Channel balance
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Tom from SWISCO responded:
March 22, 2017
We should be able to help, yes. Can you tell me the exact weight of your sash? Can you also show me a picture of the top nylon attachment on your balance? I only see the bottom in your pictures.
A quick learner says:
March 22, 2017
One more photo of the balance top nylon attachment. Top sash guide body is a little over 5/8" (21/32") wide. Sash weight is about 38 lbs.
channel balance shoe
User submitted image of their window hardware.
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Tom from SWISCO responded:
March 28, 2017
Thank you for the updated pictures. I believe you have our S390-29 channel balance, based on these pictures. For a 38 pound sash, I'd recommend the 2865 option. Two balances with this option can carry a sash weighing 35 through 39 pounds.
A quick learner says:
March 28, 2017
How about a part number for the top sash guide? I assume it also needs to be compatible with the top nylon attachment for the channel balance you recommended?
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Tom from SWISCO responded:
March 29, 2017
I'm afraid we don't have that top sash guide. We've seen it a few times in the past but have never been able to find an exact match. The 18-009 is the closest we have, but I cannot guarantee it will work.
Channel Balance Shoe, 1-1/8" Depth
Channel Balance Shoe, 1-1/8" Depth
15-001
$0.74
5/8" Top Sash Guide
5/8" Top Sash Guide
18-009
$0.99
29" Series 390 Channel Balance
29" Series 390 Channel Balance
S390-29
$11.10
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