| Aprilaire 448 High Output A12W Replacement Furnace Humidifier Filter A-12W Fits Aprilaire Models: 112, 136, 224, 440, 445, 445A, 445-A, 448 Replace your old humidfier wick filter with the new high-quality Aprilaire A12W Furnace Humidifier Filter A-12. This A 12W Humidifier Filter has a powdery substance that allows the water to move at a slower pace through the filter to receive the maximum amount of water to be absorbed into the air. The A-12-W furnace filter has a 50% higher output than the standard A12 filter. For the best performance and maximum humidity output, wick humidifier filters should be replaced every 30-45 days. The harder the water, the more it will decrease the lifespan of your wick filter. Remember to always discard your used panel filter at the end of each season. Dimensions: 11 1/2" x 14 3/4" x 1 11/16" Receive Discounts When You Order 6 or More and 12 or More! Fits Aprilaire Models: 112, 136, 224, 440, 445, 445A, 445-A, 448 Fits Chippewa Models: 224, 225, 226 Fits Walton Models: 600, 620, PBR620, PFS640, 660, PFR660, PBR-620, PFS-640, PFR-660 Part Numbers: A12W, A-12W, 12W, #12W *This filter replacement is manufactured by RPS Products to meet or exceed the performance of the original. This filter is backed with our 30-day Money Back Guarantee. **Instructions to replace your old filter are included on the box. |