16x20x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon 1 Pack aaron apply with a spreader sticker

apply with a spreader sticker like Therm-X 70

This is in addition to the highly appreciated cross grooves to improve water flow under the block

The extended root system resulting from the symbiotic relationship allows to enhance water and nutrient uptake

17½” x 6½” x 3¼” 7

No expense spared when producing our high quality ABS plastic reservoirs

16x20x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon 1 Pack aaron apply with a spreader stickerImportant Note: Almost ALL furnace filters have a different "actual size" than the nominal size printed on the air conditioner filter. It's best if you measure your air filter for the EXACT size and compare it to our "Actual Size" and then you can be sure your A C air filter fits! With the 4" and 5" air filters there is a wider variance between the nominal and actual size depending on the manufacturer. If you are replacing a 4 3 8 depth 16x20x4 filter