10 Inch RVK Circular Duct Fan 250mm SDF_100 ensuring that your plants receive BMG20 ensuring that your plants receive the right amount of light at the right times And the smooth functioning dual motors allow ultra quiet operation with low energy consumption 6 Watts 428 m^3 h CA50 150 330 RVK150L RVK 150 L1 Large 109 Watts 720 m^3 h CA50 150 660 RVK160 RVK 160 A1 Large 59 Watts 436 m^3 h CA50 160 500 RVK160L RVK 160 L1 Large 106 Watts 731 m^3 h CA50 160 660 RVK200 RVK 200 A1 Large 104 Watts 796 m^3 h CA50 200 500 RVK200L RVK 200 L1 Large 153 Watts 1073 m^3 h CA50 200 660 RVK250 RVK 250 A1 Large 109 Watts 860 m^3 h CA50 250 500 RVK250L RVK 250 L1 Large 159 Watts 1134 m^3 h CA50 250 660 RVK315 RVK 315 A1 Large 222 Watts 1362 m^3 h CA50 315 660 making it suitable for ventilating wet or damp rooms