I used nylon 4-40 pan head screws to mount all of my sidestrips. The
heads fit easily inside the trim. I put nylon nuts on the back where I
could, and glued the screws in with RTV where I couldn't. These screws
are available at many home centers, Lowes, HD, etc.
I'm not sure how long they will last, since I only did this back on
1977. Yes, that's 1977 ;-)).
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