16x20x4 (3 5/8) Pleated MERV 10 Air Filters 6 Pack Promote Release approximately 1 predatory mite

Release approximately 1 predatory mite per 5 pest mites

The MP 1200w DE HPS produces maximum par levels at highest efficiency

Free Bluelab® Connect™ Software available from bluelab

Lightech HPS has a light spectrum shifted towards red

Proprietary data logging software

16x20x4 (3 5/8) Pleated MERV 10 Air Filters 6 Pack Promote Release approximately 1 predatory miteImportant 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