4231 AP-4231 Aprilaire & APRILAIRE 4004, AP-4004 400 400A 500 500A 550 560 600..

$11.50
  • This Item is used in Aprilaire Humidifier Models: 400, 400A, 500, 500A, 550, 560, 600, 600A, 600M

This is a BRAND NEW OEM Aprilaire Humidifier Yellow Water Orifice.  This simple but critical part regulates the flow of water into the humidifier. Over time it can become clogged with sediments or mineral deposits.  It should be replaced annually for optimum performance.  Be sure to clean or replace your In Line Strainer (Aprilaire part # AP-4231) when you replace the orifice. 

  • APRILAIRE 4004 (may be red or black)

    IN LINE WATER STRAINER

    This Item is used in Aprilaire Humidifier Models: 110, 112, 220, 224, 350, 360, 400, 440, 445, 445A, 448, 550, 550A, 558, 560, 560A, 568, 600, 700, 760, 760A, 768