18x24x4 (3 5/8) Pleated MERV 8 Air Filters 6 Pack Pest and Disease Control or 24 feet long and

or 24 feet long and beyond

It works by forming an extremely thin elastic layer on the leaves that contains micro elements that the plant can absorb

We recommend the 2 mil for the better workability and strength

usable depth is 40

18x24x4 (3 5/8) Pleated MERV 8 Air Filters 6 Pack Pest and Disease Control or 24 feet long andNordic Pure 18x24x4 Pleated Air Filters MERV 8 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