21x21x1 Exact MERV 12 AC Furnace Filters 6 Pack ventilation PPM (700) and temperature• Premium

PPM (700) and temperature• Premium probe technologies and materials ensure high accuracy and durability with minimal maintenance• Titanium alloy sensor designed for high accuracy EC measurement• Easy-to-use design and fast calibration adjustment

Iron phosphate

Thorough plant coverage is essential to obtain optimal levels of control

Branch and Twig Borers

That’s why we offer a 5-year warranty on this product

21x21x1 Exact MERV 12 AC Furnace Filters 6 Pack ventilation PPM (700) and temperature• PremiumNordic Pure MERV 12 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, allergens and other contaminants are removed. MERV 12 furnace filters are comparable to HVAC filters with the rating of MPR 1500 1900. While different