20x20x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon 6 Pack Hand Tools Operate in ambient temperatures between

Operate in ambient temperatures between -40°C (-40°F) and 35°C (95°F) when suspended

Up to 200 cfm for the Coco

This CMh cordset is easy to install and works with all PGZ18 base T9/T12 ceramic halide lamps

preventing any spillage or damage to your growing area

The clearner the area the longer this filter will last

20x20x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon 6 Pack Hand Tools Operate in ambient temperatures betweenImportant 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