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Aprilaire 4166 Humidifier Replacement Knobs


Aprilaire 4166 Humidifier Replacement Knobs
$9.57 /ea
Retail: $11.99 /ea
You Save: 20%
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Retail: $11.99
You Save: 20%

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Product Information

Note: Manufacturer has discontinued this item. There are currently no replacement available at this time

The Aprilaire 4166 fits the following humidifier models:

  • Aprilaire 440
  • Aprilaire 445
  • Aprilaire 445A

The Aprilaire 4166 Humidifier Replacement Knobs are replacement knobs, and attach to the front cover of the housing.

Each unit requires two knobs. Also referred to as door nuts.


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