5 Fan Blades Heating Furnace Fan

Features:
Easy to install and remove.
5 blades, provides larger and wider hot air circulation.
No needs cell and electric energy, eco-friendly and energy saving.
High-strength aluminum alloy material blade, heat resistant and deformless.
Automatical adjust fan speed according to furnace surface temperature.
Noise less than 25 decibels, let you enjoy the hot air in a calm and comfortable environment.
The bottom designed have safe protective double metal straps, protect motor module from high tempreture damage.