18x20x1 Furnace Filter Camfil AP-3. (12-pack) $136.00 $116.00

MERV 8 yields high indoor air quality with an exceptional filter that rivals the brand name competition. GREAT VALUE: You pay only $9.67 each! Pay less, get more. Most affordable product of this size! HIGHLIGHTS MERV 8...

18x20x1 Furnace Filter Camfil 30/30. (12-pack) $144.00 $124.00

MERV 8: Best selling -- 5 Star Rated with Innovative Technology. Ultimate filter for Canadian homeowners. Offers the best value for price, lifespan, and air quality with brand name reliability. Pay only $10.33 per filter!...

18x20x1 Furnace Filter Camfil AP-11. (12-Pack) $182.00 $162.00

MERV 11: High Efficiency -- State of the art filtration capabilities remove allergens, the perfect choice for Canadian homeowners to elevate air quality. Brand name reliability at a low cost: pay only $13.50 per furnace...