16x25x5 (4 3/8) Honeywell/Lennox Replacement Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filter 1 Pack extraction Rich bio-organics are added to

Rich bio-organics are added to improve the uptake of nutrients and strengthen the plant's natural immunity to environmental stress

Taped seams add an extra layer of protection

Buffered soil-less grow medium

It is constructed of flame-retardant polypropylene thermoplastic that can be painted over to match the environment

16x25x5 (4 3/8) Honeywell/Lennox Replacement Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filter 1 Pack extraction Rich bio-organics are added toImportant 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,