Aprilaire 4247 Fan Blade 318423-701 facilitating rapid millivolt signal generation

facilitating rapid millivolt signal generation to the safety shutoff valve

Rotation is determined by looking at the wheel from the hub/motor side

Industrial Durability: Engineered to withstand high-cycle manual operations and industrial-grade thermal stress

effectively preventing operation during unsafe draft conditions or venting obstructions

Is the HH18HA119 a manual or automatic reset switch

Aprilaire 4247 Fan Blade 318423-701 facilitating rapid millivolt signal generationThe Aprilaire 4247 Fan Blade is a critical OEM replacement part designed to restore the efficiency and quiet operation of your fan powered humidifier. Constructed from high quality aluminum, this 10 inch diameter blade is engineered to pull heated air directly from your furnace, ensuring your Aprilaire 700 series system maintains peak performance. Featuring a 1 4 inch drive shaft hole and an included set screw (requires a 1 8 inch Allen wrench), this