20X20X4 MERV 13

Camfil

20x20x4 Furnace Filter Merv 13. (6-pack)

MERV 13: Highest Efficiency filtration. The BEST Canadian homeowners can buy! Better performance, superior results for a cleaner, safer home. And at just $38.17 per filter, you’re paying for superior dust and allergen removal without the name brand...

AAF Flanders

20x20x4 Furnace Filter Merv 13 (6-pack)

$36.33/each MERV 13 filter : Highest Efficiency filtration. The PREpleat M13 pleated filter by AAF Flanders has a low initial resistance and supports achievement of LEED® credits by significantly improving Indoor Air Quality (IAQ)...