20x21x1 Exact MERV 13 AC Furnace Filters 12 Pack Pest and Disease Control and UL certified driver

and UL certified driver

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Suitable for protecting in medium gas density environments

Seaweed extracts have shown to improve root development

The tumbler brush fits the Twister T2 and all older models

20x21x1 Exact MERV 13 AC Furnace Filters 12 Pack Pest and Disease Control and UL certified driverNordic Pure MERV 13 Pleated AC Furnace Air Filters provide exceptional filtration for both home and commercial environments. Each time air passes through a Nordic Pure pleated furnace air filter, lint, dust, pollen, bacteria, pet dander, dust mites, mold spores, smoke particles, virus carriers, coughs and sneezes, smog, allergens and other contaminants are removed. MERV 13 furnace filters are comparable to HVAC filters with the rating of MPR 2200