16x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 10 Air Filters 2 Pack Air Filter for both organic and conventional

for both organic and conventional growers

For tank operation: insert the reservoir and set your target humidity on the LED panel

water-soluble amorphous powder suitable for spraying

Simply trim and sanitize two-inch cuttings and add the prepared liquid establishment medium

• Spectrum Combinations for your plants

16x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 10 Air Filters 2 Pack Air Filter for both organic and conventionalImportant 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,