20x25x5 (4 3/8) Honeywell/Lennox Replacement Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters 4 Pack spl_hw Display: three-digit vertical LCD

Display: three-digit vertical LCD

Users can blend plant material with ice water or dry ice (without water) to assist in the separation process

and even more with the help of the Resinator

Why Sluggo

7 μmol/J and an average PPFD 864 μmol/s @12" in 3'x3' coverage

20x25x5 (4 3/8) Honeywell/Lennox Replacement Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters 4 Pack spl_hw Display: three-digit vertical LCDImportant 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,