Circulation fan is hanging in the roof, most suitable for make the air more well-distributed International standard energy saving technique, and thermal protection system. Aluminum punching fan blade, big wind capaciyt and low noise. The shell can be selected by stainless steel and plastic steel. The shell adopts the whole current collector design. Own beautiful and convenient buckle. Model Phase voltage Frequency Power Speed Air volume weight ZR40-4 3 380 v 50 HZ 180w 1400 r/m 2260CFM 8.5kg