sliding screen door bottom guides

A quick learner from United States says:
These are old cottage doors. No brand name found.

Missing 6 of these sliding screen door bottom guides. The aluminum extrusion measures 1/2" on the outside, about 3/8" inside extrusion dimension. About ½" deep (tall) and 2.5" min. length. Of course, the light screen door rides on a narrow single aluminum track rail that's in the center of the extrusion.

Purpose of the plastic guide is mostly to keep the aluminum from rubbing on aluminum. Smoother action. As a backup plan, I am thinking that a pair of very narrow J or U-shaped plastic guides wrapping around and gluded to the aluminum might work.
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Dave Sr. from SWISCO responded:

I'm not sure if we have exactly what you're looking for, but take a look at our 86-002 and 86-027 bottom guides. See if either of these could possibly work for you.

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