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The Autoflo 401493 fits the following model of whole house bypass style humidifier:
The AutoFlo Model 250 Humidifier Water Line/Orifice contains the humidifier's water line and orifice. The AutoFlo model 250 humidifier part is also known as AutoFlo part number 401493.
AutoFlo Model 250 Humidifier Water Line/Orifice specifications: