18x24x4
18x24x4 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 | $25.50 | $36.33 |
$32.33 |
$38.83 |
| PRICE 6-PACK | $153 |
$218 |
$194 | $233 |
| 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.
