20x24x4 (3 5/8) Pleated MERV 13 Air Filters 6 Pack Monterey Lawn & Garden Products Both high and low level

Both high and low level limits are user-adjustable to meet local regulations for supplemental CO2 use indoors

This Product Controls These Pests or Diseases: Alternaria

The performance of this product is not affected by fumigation

ISO 9002 Certified

20x24x4 (3 5/8) Pleated MERV 13 Air Filters 6 Pack Monterey Lawn & Garden Products Both high and low levelNordic Pure 20x24x4 Pleated Air Filters MERV 13 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, smoke particles, smog, virus carriers, bacteria, mold spores and other contaminants are removed. All Nordic Pure pleated air filters are manufactured using a