double hung, wood window replacement hardware

A handy person from 75218 says:
See attached stamp photo for marking. Appears to be a single PVC track, 3-1/2" wide w/ a neoprene sweep on the exterior face that snaps into concealed clips mounted in a rabbet (see photo). I have 7 window balances to replace + weatherstripping, 2 different lengths (4 are ~49" L., 3 are approx. 46" L.). Would also appreciate a suggestion of how to remove sashes for replacement considering it's one piece. Thanks, Doug.
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Casey from SWISCO responded:

Hello,

We'd be happy to look into this for you but we'll need to see the shoe removed from the window to compare to our inventory. 

Based on your photos, unfortunately, I'm not sure how the sash would be removed without seeing the shoe that anchors the bottom of the sash. What I can say is that this type of window sash traditionally just tilts out by hand and then you would twist it free. I can't be sure if that is the case for your window but would be a good place to start.

As for the weather seal, we would need to see an end profile photo of yours uninstalled to compare to our inventory. In the meantime, you're welcome to look through our selection here. Thank you. 

A handy person from 75218 says:
Thanks, easy to remove. See attached photos for jamb liner profile and length.
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Casey from SWISCO responded:

Thanks for getting back to us. To clarify, please note that jamb liners are not something that we can supply. With that being said, the shoe partially shown in your photo reminds me of the S751 shown below. You would need to remove the shoe to confirm that it matches the 15-014 knife lock shoe used with our stock balance. You'll also need to determine the channel length and stamp code of an undamaged assembly to choose the correct specifications for your replacements. We also offer the 26-150 pivot pair that resembles your last photo. Take a look and see what you think. 

How to measure the length of the Series 751 channel balance.
How to measure the length of the Series 751 channel balance.

Dimensions for 15-014
Dimensions for 15-014

Dimensions for 26-150
Dimensions for 26-150

How to install a ribbed tilt channel balance with knife lock shoe
How to install a ribbed tilt channel balance with knife lock shoe
VIDEO
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Removing Rusted Pivot Bars
Removing Rusted Pivot Bars
VIDEO
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Anatomy of a tilt window
Anatomy of a tilt window
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