20x23x1 MERV 13 AC Furnace Filters 6 Pack Pest and Disease Control Hanna's line of solutions have

Hanna's line of solutions have been specially formulated to have an expiration of 5 years from the date of manufacture for an unopened sachet

| Airflow: 106 CFM | Noise: 28 dBA | Bearings: Dual Ball

Acid dosing causes the relay to activate when the measurement is higher than the set point

Nordic Pure 12x20x2 MERV 13 Plus Carbon air filters are made of electrostatically charged synthetic materials with an added flat panel infused with activated charcoal that attracts and capture most airborne particulates in your home

20x23x1 MERV 13 AC Furnace Filters 6 Pack Pest and Disease Control Hanna's line of solutions haveNordic 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