Corrosion-Resistant, Quiet PP Centrifugal Fan for Fume Hoods, 300W 220V Strictly Selected Materials Housing: PP material Impeller: ABS material Motor: Built-in copper wire Professional Craftsmanship Rigorous production control, pursuing quality Application Classification Product features duct-connected ventilation Manufacturing Process Housing: Hand-welded for airtight sealing, preventing air leakage Product Function Connects to ductwork; motor drives impeller to generate airflow suction, extracting smoke, dust, gases, and mist Simple Installation Easy to install, user-friendly setup