16x20x4 (3 5/8) Pleated Air Filters MERV 13 Plus Carbon 1 Pack spl_bfg disease and plant pests from

disease and plant pests from damaging the crop

and comfortable ergonomic rubber grip

blanketing your canopy with maximum usable light

You can stop relying on hand written data logs when you start using the HALO

42 x PotPro™ | Platform

16x20x4 (3 5/8) Pleated Air Filters MERV 13 Plus Carbon 1 Pack spl_bfg disease and plant pests fromImportant 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. If you are replacing a 4 3 8 depth 16x20x4 filter