20x20x4 - 3M Filtrete
3M Filtrete 20x20x4 Furnace Filter Case of 4.
- 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
20x20x4 Furnace Filter 20 x 20 x 3.68" MERV 8 Rated Pleated Filters. Case of 4.
- 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
20x20x4 Furnace Filter 20 x 20 x 3.68" MERV 11 Rated Pleated Filters. Case of 4.
- 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
- Free Shipping In Ontario & Quebec*
- Pick Up In Store $55.00