18x24x4 (3 5/8) Pleated MERV 10 Air Filters 2 Pack Hydroponics The large surface area gives

The large surface area gives the T2 leaf collector unsurpassed reliability

Each duct collar is made of galvanized steel that can weather extreme temperatures and is finished with a corrosion-resistant zinc coating

they also offer excellent drainage properties

Programmable LCD controller with heating and cooling thermostat

18x24x4 (3 5/8) Pleated MERV 10 Air Filters 2 Pack Hydroponics The large surface area givesNordic Pure 18x24x4 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