Photos attached of screen door rollers. No names or model numbers available. Te mechanism uses a gear and drive for adjustment of roller wheel. Able to identify or provide part?
Bob from SWISCO responded:
August 10, 2020
This is an old Marvin roller that I am afraid is no longer made. However, we've had one customer report that the 84-016 and 95-020 can be used as replacements. Take a look and see what you think.