"Aprilaire’s Model 865 Ductless Steam Humidifier fan pack is a versatile and easy-to-install dispersion unit with only an aesthetically pleasing grille located in the living space.
The fan pack is sized so that it is hidden in the wall. This allows the unit to be installed on nearly any wall in the house, even if there is a living space on both sides. With more applications, contractors can increase their humidifier business by quoting humidification for more customers."
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