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20 x 20 x 4(3 3/4") - All 4" Furnace Filters

20x20x4 Furnace Filter 20 x 20 x 3.68" MERV 8 Rated Pleated Filters. Case of 4

In 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
  • Manufactured in Canada
  • Case of 4
  • Pick Up In Store $38.00

20x20x4 Furnace Filter 20 x 20 x 3.68" MERV 11 Rated Pleated Filters. Case of 4

In 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
  • Manufactured in Canada
  • Case of 4
  • Pick Up In Store $58.00