plastic anti-friction guide

A quick learner from United States says:
September 7, 2010
Hello,
I am looking for plastic strips that act as anti-friction guides along the vertical edges of the lower (sliding) sash of the single-hung windows.

Thanks,
Armen

There is one strip along the left and another along the right vertical edge of the lower (sliding) sash of the single-hung windows in my house.
Customer images of their anti-friction guide.
1. The image on the left is the end-view showing the strip (painted black to show better), which slides into the groove of the aluminum frame.

2. The image on the right is a dimensional sketch of the strip.

Any suggestions as to where I might be able to locate these strips or something similar?
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Mike from SWISCO responded:
September 13, 2010
Thank you for sending us your images. Unfortunately, I do not think we can supply you with a compatible replacement. The closest item we carry would be the 5' Dual-durometer Weatherstrip.
A quick learner from United States says:
September 13, 2010
Hello Mike, Would you be ale to send me a 2-inch long sample of this strip? I might be able to cut the bulb out, which will then be very similar to the cross-section I'm looking for.
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Mike from SWISCO responded:
September 13, 2010
I am sorry, samples are not available.
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