I have ALCON aluminum windows approx. 25 years old. The white plastic glazing strips (photos enclosed) has yellowed and cracked. They measure 1/2 inch by 5/16 inch. I'm looking for replacements glazing strips. In an earlier post you referenced part no.
55-092 as a replacement for an ALCON window but the shape of that part number doesn't look like mine. Mine is L shaped. Do you have another part number to recommend to me or suggestion of where else I could look?