Suitable For Use With:
Model 400, 400A, 400M, 500, 500A, 500M, 550, 550A, 558, 560, 560A, 568, 600, 600A and 600M Humidifier
Aprilaire 4231 yellow orifice is used to accurately meter the flow of water for the Aprilaire Models 400, 400A, 400M, 500, 500A, 500M, 550, 550A, 558, 560, 560A, 568, 600, 600A, and 600M.
Type
Material
Dimensions
Color/Finish
Suitable For Use With
IsInactive
Humidifier Part
Plastic
11/64 in OD
Yellow
Model 400, 400A, 400M, 500, 500A, 500M, 550, 550A, 558, 560, 560A, 568, 600, 600A and 600M Humidifier