20x20x4
20x20x4 furnace filter. Premium quality made by CAMFIL.
| CAMFIL AP-3 | CAMFIL 30/30 | CAMFIL AP-11 | CAMFIL AP-13 | |
| MERV | 8 | 8 | 11 | 13 |
| LIFESPAN | 4 months | 6 months | 5 months | 5 months |
| COST PER FILTER | $19 |
$26.83 |
$28 | $42.83 |
| PRICE 6-PACK | $114 |
$161 | $168 | $257 |
| OVERVIEW | economical | best overall value |
remove allergens at low cost |
superior dust and allergen removal |
The higher the MERV rating on a filter, the fewer dust particles and other contaminants can pass through it.
