14''x40'' Funk Filter Carbon Air Filter pumps-&-irrigation an efficiency rating of 14

an efficiency rating of 14 to 18 SEER (Season Energy Efficiency Ratio)

this is precisely how plants obtain their nutrients in nature

There is no recirculation of contaminates in the room regardless of HEPA filtration and HVAC negative pressure inconsistencies

and iron deficiencies

14''x40'' Funk Filter Carbon Air Filter pumps-&-irrigation an efficiency rating of 14Funk Filters consist of an aluminum housing packed with a high performance virgin activated carbon. These are available in a wide range of sizes making them ideal for smaller tents and large commercial greenhouse applications. They remove 99. 5% of all odors and most other airborne particles to keep your plants safe. The granular carbon has a 1050 mg g iodine number providing more surface area and thus a longer filter life. The extra efficient 2 inch