20x20x4 Furnace Filter 20 x 20 x 3.68" MERV 11 Rated Pleated Filters. Case of 4 - MADE IN CANADA by FurnaceFilters.Ca
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20x20x4 Furnace Filter 20 x 20 x 3.68" MERV 8 Rated Pleated Filters. Case of 4 - MADE IN CANADA by FurnaceFilters.Ca
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3M Filtrete 20x20x4 Furnace Filter Case of 4.
Out of Stock
Aerostar 20x20x4 MERV 13 Pleated Filter - Actual Size : 19-1/2 x 19-1/2 x 3-3/4 Inches - Case of 4 - MADE IN CANADA
Honeywell 20x20x4 Furnace Filter Model # FC100A1011 MERV 10. Actual Size 19 15/16" x 19 3/4" x 4 3/8" Aftermarket. Case of 3 MADE IN CANADA by FurnaceFilters.Ca
Honeywell 20x20x4 Furnace Filter Model # FC100A1011 MERV 11. Actual Size 19 15/16" x 19 3/4" x 4 3/8." Case of 3
Honeywell FC100A1011 - 20x20x4 Reusable Filter Frame Kit - Includes Lifetime Reusable Frame MODEL # RFFS 885 and 6 Replacement Filters PART # PP-885 MERV 11 - MADE IN CANADA by FurnaceFilters.Ca
