Aprilaire 440 Furnace Humidifier Filter 12-Pack
The wick filter is one of the most important components of your furnace humidifier. Water needs to be able to absorb into the filter, so that air can travel through, and deliver clean moist air into your home.
Fits Aprilaire furnace humidifier models: 440
Aprilair part numbers 12, A12, A-12
Approx. Measurements: 14-3/4" L X 1-5/8" W X 11-3/8" H
Please Note: These are Replacement Filters made to meet or exceed OEM quality standards. Fit and Function are Backed With a 30-day Money Back Guarantee