The UHS 99 can replace common units such as Aprilaire 4040, General's 990-53, Honeywell 32001639-002 and the Skuttle A01-0814-48 in 24 V versions. The UHS will soon become an essential truck stock item. All appropriate fittings are included in the kit with a universal bracket. Flow can easily be reversed by removing two screws, turning the solenoid 180 degrees, and replacing the screws.