21x23x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack stocked 45mm Round Form Factor –

45mm Round Form Factor – Compact circular design fits standard round jars

To avoid contamination of the product

Squat Pots are ideal for cloned plants or even applications with multiple shallow rooting plants in one pot

Certain applications such as aquarium

21x23x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack stocked 45mm Round Form Factor –Nordic 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.