Shopping Cart

Browse by Size:



Browse by Part #:

20x20x4 - 3M Filtrete

20x20x4 Furnace Air Filter MERV 8. Exact Size 19 3/8 x 19 3/8 x 3 5/8. Case of 4 by FurnaceFilters.Ca

Out of Stock

  • Standard 20 x 20 x 4 MERV 11 Rated Pleated Filters
  • Actual Size 19 1/2" x 19 1/2" x 3 3/4" 
  • Exact Replacement for 3M Filtrete 20 x 20 x 4 Air Cleaning Filter
  • Case of 4
  • Made in Canada


    Sold Out

    3M Filtrete 20 x 20 x 4. Case of 4.

    Out of Stock

    • Genuine Original 3M Filtrete 20 x 20 x 4 
    • Actual Size 19 1/2" x 19 1/2" x 3 5/8" 
    • Equivalent to MERV 11
    • Case of 4
    • Free Shipping In Ontario & Quebec*
    • Pick Up In Store $140.00


    Sold Out

    MERV 8 Rated Pleated Filters. Case of 4.

    Out of Stock

    • Standard 20 x 20 x 4 MERV 8 Rated Pleated Filters
    • Actual Size 19 1/2" x 19 1/2" x 3 3/4"
    • Exact Replacement for 3M Filtrete 20 x 20 x 4 Air Cleaning Filters
    • Case of 4, Made in Canada
    • Free Shipping In Ontario & Quebec*
    • Pick Up In Store $35.00


    Sold Out