20x20x4 (3 5/8) Furnace Air Filters MERV 8 Pleated Plus Carbon 1 Pack Nutrients The Radiant's generous reflective interior

The Radiant's generous reflective interior is designed to deliver the brightest possible light down to your plants

9% Yucca schidigera ​ Extract (Wetting Agent)

Beneficial Microorganisms (nitrogen-fixing & composting bacteria)

*Black Power Cloners™ do not include a Humidome™

Airflow Rating 200 CFM

20x20x4 (3 5/8) Furnace Air Filters MERV 8 Pleated Plus Carbon 1 Pack Nutrients The Radiant's generous reflective interiorImportant 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 20x20x4 filter