17x21x1 Exact MERV 13 Plus Carbon AC Furnace Filters 12 Pack ac-dehumidification-humidification or with a 2' T5

or with a 2' T5 fluorescent lighting system (the 8 lamp fixture fits perfect

or 1 gallon containers

CO2 and also provides an accurate VPD measurement

works great with 20 gallon industrial Rubbermaid tubs

17x21x1 Exact MERV 13 Plus Carbon AC Furnace Filters 12 Pack ac-dehumidification-humidification or with a 2' T5Nordic 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.