KeepRite C9MPV075F12C1 Furnace Filter Replacement

Whenever I change my furnace filter , it is always bent inward towards the furnace fan I assume that it gets covered

I wonder if the previous owner lost the cover for the filter slot I would think that you would want this covered

furnace filter slot Note that there is no door that closes to cover the filter slot It's permanently open by design AFAIK Thanks More Pictures Filter

jocuri slot air filter and the two-piece system allows you to cover a filter slot up to 25 inches which is