| Genuine Aprilaire 4181 Scale Control Insert For Models 350 and 360 |
 The Aprilaire Scale Control Insert 4181 is the u-shaped component which encases the Water Panel. Their purpose is to direct any mineral which builds up back into the evaporative panel. Used with the water panel number 35 and the water distribution tray number 4182. Also see part number 4785, maintenance kit for the Models 350 and 360. Related Products: Aprilaire 35 Water Panel Aprilaire 350 Humidifier w/ Manual Humidistat Price: 22.99 |