Humid Device Stations: Max 2pcs per set
Compatible with all major lamp brands
Minimum 3 applications at 5-7 day intervals or shorter in severe infestations
| Airflow: 402 CFM | Noise: 32 dBA | Bearings: Dual Ball
17x21x1 Exact MERV 13 AC Furnace Filters 6 Pack AC / Dehumidification / Humidification Humid Device Stations: Max 2pcsNordic 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