20x20x5 (4 3/8) Honeywell/Lennox Replacement Furnace Filters MERV 8 Pleated Plus Carbon 4 Pack Lamps Producing very high levels of

Producing very high levels of PPF output of 816 µmol/s and a Photon Efficacy (fixture efficiency) of 2

entertainment centers

Root Pots are not tapered like plastic pots

• 2 year warranty

• Necessary for (P) phosphorus uptake

20x20x5 (4 3/8) Honeywell/Lennox Replacement Furnace Filters MERV 8 Pleated Plus Carbon 4 Pack Lamps 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,