20x20x5 (4 3/8) Honeywell/Lennox Replacement Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters 2 Pack lighting-&-electrical-components grow tent ventilation systems

grow tent ventilation systems

Mix 1/2–2 tsp

Nordic Pure 16x20x4 Plus Carbon Air Filters MERV 14 are made of electrostatically charged synthetic materials with an added flat panel infused with activated charcoal that will attract and capture most airborne particulates in your home

Filtered air must be expelled via external exhaust to maintain a higher standard of air cleanliness in the compounding facility

20x20x5 (4 3/8) Honeywell/Lennox Replacement Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters 2 Pack lighting-&-electrical-components grow tent ventilation systemsImportant 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. We also carry 4 7 8 and 5 1 4 inch depth filters,