16x24x4 (3 5/8) Pleated MERV 10 Air Filters 1 Pack nutrient-combo On the backside are ports

On the backside are ports to connect and control additional fans

Note: 50 units fit in a 10x20 tray

Constructed with an aluminum mounting frame and heavy-duty steel enclosure

Two fan units with controller

Seawead extracts in Alg·A·Mic™

16x24x4 (3 5/8) Pleated MERV 10 Air Filters 1 Pack nutrient-combo On the backside are portsNordic Pure 16x24x4 Pleated Air Filters MERV 10 are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home. Each time air passes through a Nordic Pure pleated furnace filter, lint, household dust, pollen, dust mites, pet dander, bacteria, mold spores and other contaminants are removed. All Nordic Pure pleated air filters are manufactured using a heavy duty, moisture resistant beverage