16x25x4

16x25x4 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 $20.17
 $29
 $27.17 $39.83
PRICE 6-PACK $121
 $174 $163 $239
 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. 

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