20x20x4 (3 5/8) Furnace Air Filters MERV 10 Pleated Plus Carbon 6 Pack books-&-videos Z7 goes right to the

Z7 goes right to the problem and fixes it

Moisture content below 9% means the flower is more fragile and trim quality may diminish

• LED indicators

Available in 100’ and 200’ rolls

minutum - East of the Rockies

20x20x4 (3 5/8) Furnace Air Filters MERV 10 Pleated Plus Carbon 6 Pack books-&-videos Z7 goes right to theImportant 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 20x20x4 filter