Orifice for 400, 500, 600, 400A, 500A, 600A, 500M, 600M, 700M
Orifice for 400, 500, 600, 400A, 500A, 600A, 500M, 600M, 700M
Rated 5 out of 5. (1 Review)
Model: Aprilaire 4231
Yellow orifice for Aprilaire humidifier models 400, 500, 600, 400A, 500A, 600A, 500M, 600M and 700M.
System Information
Product Type
Tools and Replacement Parts
Orfice Installation Diagram(PDF, 69.8 KB)
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