■ Simply attach the fan to the ceiling air conditioner to eliminate direct air conditioning wind. ■ Improves air conditioning efficiency and reduces electricity bill. ■ The fan is powered by air conditioner wind, so it doesnt cost electricity bill. ■ Air circulation in the room eliminates temperature irregularities. ■ As a result, the temperature of the air conditioner can be changed between 3.4 - 3.0 degrees F (1 - 3 degrees C), which leads to reduced electricity bill and CO ■ Color Type: Blade Half Clear (CW), Spoke Silver, Center Member White; ■Material: Blade Plastic Material, Spoke Aluminum Material; Weight: Main Body Approx. 27.9 oz (795 g), Mounting Hardware Approx. 8.5 oz (240 g); Variable Range: Diameter 35.4 - 43.3 inches (900 - 1,100 mm).