FRP Fiberglass Exhaust Fan (Square)The exhaust fan is made of stainless steel with a special thick galvanized layer and utilizes advanced CNC processing technology to ensure durability and long lifespan, even in harsh environments. The square design provides a larger ventilation area, effectively improving exhaust efficiency. With the unique design of large angle aluminum alloy stainless steel fan blades, it achieves an ideal air circulation, rapidly expelling indoor humid and polluted