The Autoflo House Humidifier
Model 450 is an air flow driven or powered turbine unit - same
pad as the 400BP.
This unit is no longer in production but parts are still available.
Humidifier Evaporative Filter / Pad (450EP) for Autoflo - this foam pad is treated with an agent to resist bacterial infection and fungal attack. This pad is for use with Model 400 Series and Model 450 Humidifiers.