16x20x4 (3 5/8) Pleated Air Filters MERV 15 Plus Carbon 6 Pack water-filtration HEPA Air Filter

HEPA Air Filter

Promotes Healthy Growth: The slightly higher phosphorus content promotes strong blooms and lush foliage

It also features brown-out/black-out detection and timing for optimal light restart

The DL Bill Counter features a bright TFT LCD screen and includes functions such as

All 600 watt core and coil (magnetic) ballasts are HPS rated

16x20x4 (3 5/8) Pleated Air Filters MERV 15 Plus Carbon 6 Pack water-filtration HEPA Air FilterImportant 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