20x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 12 Air Filters 4 Pack leds a par-boiled rice hull amendment

a par-boiled rice hull amendment

The Fan Heat Shield blocks the heat generated by inline duct fans from radiating off of them

Blade Length: 13

Horti rawK ensures you get the maximum weight out of your flowers when it comes time to harvest

20x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 12 Air Filters 4 Pack leds a par-boiled rice hull amendmentImportant 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,