Aprilaire500 12-gal. Whole-House Small Bypass Evaporative Humidifier with Automatic Digital Control for up to 3,600 sq. ft. + AprilAire Model 5844 Humidifier Installation Kit

AprilAire 500 12-gal. Whole-House Small Bypass Evaporative Humidifier with Automatic Digital Control for up to 3,600 sq. ft. + AprilAire Model 5844 Humidifier Installation Kit

AprilAire 10 Water Panel Humidifier Filter Replacement for AprilAire Whole-House Humidifier Models 110, 220, 500, 500A, 500M, 550, 550A, 558 (Pack of 2)

AprilAire 5844 Humidifier Installation Kit for AprilAire Whole Home Humidifiers with Automatic Control, Compatible with AprilAire Humidifier Models: 400, 500, 600 Black