16x21x1 MERV 12 Plus Carbon AC Furnace Filters 12 Pack coco but also focus sizes at

but also focus sizes at 3 foot intervals to support CMH footprints

1-2 teaspoons per gallon of water 3-4 times per week

Pre-amplified pH electrode

New silicone seal between the lid and bin make the connection 100% airtight - with no air loss

Long shelf life

16x21x1 MERV 12 Plus Carbon AC Furnace Filters 12 Pack coco but also focus sizes atNordic Pure pleated AC air filters are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home or office. Each time air passes through a Nordic Pure pleated furnace filter, lint, household dust, pollen, dust mites, pet dander, baking flour, mold spores and other contaminants are removed. Our filter media prevents the growth of bacteria or mold, resulting in a much healthier living space.