18x20x1
18x20x1 furnace filter. Premium quality made by CAMFIL.
| CAMFIL AP-3 | CAMFIL 30/30 | CAMFIL AP-11 | |
| MERV | 8 | 8 | 11 |
| LIFESPAN | 2 months | 3 months | 3 months |
| COST PER FILTER | $11.17 | $11.92 | $15.67 |
| PRICE 12-PACK | $134 | $143 | $188 |
| OVERVIEW | economical | best overall value |
remove allergens at low cost |
The higher the MERV rating on a filter, the fewer dust particles and other contaminants can pass through it.
