Short answer
The two meet different needs. A pleated screen makes it easy to pass through; a hook-and-loop filter gives clean air.
| Pleated insect screen | Hook-and-loop window filter | |
|---|---|---|
| Installation | Frame, usually screwed on | Hook-and-loop tape, no drilling |
| Passing through | Opens and closes easily | Fixed; one edge can be opened if needed |
| Dust and pollen | Usually gets through | ✓ Holds back most |
| Tiny insects | Partly | ✓ |
Made to measure: hook-and-loop or roll

