20x25x5 (4 3/8) Lennox X6673_X6675 Replacement Air Filters MERV 15 Plus Carbon 2 Pack smoking-accessories Producing very high levels of

Producing very high levels of PPF output of 508 µmol/s and a Photon Efficacy (fixture efficiency) of 2

molds and mildew

and 36 tubes

ReadyGro is a premium blend of select

since it qualifies for exemption under FIFRA section 25 (B) as a minimum risk pesticide

20x25x5 (4 3/8) Lennox X6673_X6675 Replacement Air Filters MERV 15 Plus Carbon 2 Pack smoking-accessories Producing very high levels ofImportant 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,