20x20x4 (3 5/8) Furnace Air Filters MERV 8 Pleated Plus Carbon 2 Pack pumps-and-irrigation-supplies this room works great with

this room works great with one 250 or 400 watt lighting system

This is gentle on plants and the yo-yo string is 60" in length

making transplanting less stressful to the clones

manufactured by Nordic Pure

The Q Plug propagation plug is specially designed to provide the ideal growing environment for your clones

20x20x4 (3 5/8) Furnace Air Filters MERV 8 Pleated Plus Carbon 2 Pack pumps-and-irrigation-supplies this room works great withImportant 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