Usha Crisp Air 150 mm Exhaust Fan Series:Crisp Air Dimension:16.5x25.9x25.9cm Color/finish:White Sweep:150mm Voltage:230V Material:Plastic No of Blades:5 Speed:1386RPM Power:30W Air Delivery:150 m3/Hr No of Speeds:1 Includes:1 Exhaust fan Refresh the air around you with this stylish plastic exhuast which comes in attractive colors and a back shutter.This fan is suitable for any domestic usage Light weight and low noise performance Corrosion protection with rust proof body and blades High Suction at low noise with aerodynamically designed blades Light weight fan for easy installation.Ideal for duct size of 7x7 Inches Sleek and Stylish design:Ideal for any bathroom or kitchen Powerful 100 Percent copper motor ensures robust performance Automatic back shutters to protect against foreign objects The light weight Crisp Air Exhaust Fan features a Sleek and stylish design with a rust-proof body and blades.It is also equipped for whisper-quiet operation.Sweep size mentioned in product title is the dimension (diameter) of the blade.It should not be the sole criterion for you to make a purchase decision.Before buying an exhaust fan,it is important to consider a few other factors such as the dimensions of the duct (length,width),available space around the duct from the ceiling or side walls,whether installation is done on glass or concrete wall,etc.Accurate knowledge of the duct dimensions will help you make precise comparisons with the dimensions provided in the image.This will best serve your purpose and make your purchase seamless