20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 14 Air Filters 1 Pack soil nutruient and resin injected housing limiting

and resin injected housing limiting RF interference

and low maintenance costs

Dyna-ZYME works in conjunction with mycorrhizae and beneficial bacteria to break down nutrients

Sunmaster’s 1000W COOL lamps are designed to support strong vegetative growth

which for germinating seedlings and grow plants

20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 14 Air Filters 1 Pack soil nutruient and resin injected housing limitingImportant 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,