20x20x4 (3 5/8) Pleated MERV 8 Air Filters 1 Pack Travel Bags & Backpacks healthy growth

healthy growth

soak them for 15 to 30 minutes in a Dr

HLG covers the BlackBird with a 3-year manufacturer warranty

Preset options allow you to choose seal time

500K Lamps 5

20x20x4 (3 5/8) Pleated MERV 8 Air Filters 1 Pack Travel Bags & Backpacks healthy growthImportant 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