I've attached images of a cross section of the existing retainer strip and of the door's identification information. Please let me know if you need anything else. Thanks!
Bob from SWISCO responded:
May 6, 2020
We don't have an exact match for this retaining strip, and they can be hard to come by. See if you could instead use our 70-180 Storm Door Insert Clip, along with the 33-020 Screw, as a substitute. Let me know what you think.