The Vortex Powerfans Industrial 4in Centrifugal Exhaust Inline Fan VTX400P is a high-quality electric exhaust fan designed for industrial ventilation systems. With a round shape and a compact size of 4 inches in height and diameter, this fan is easy to install and operate. Made of durable metal materials and manufactured in Canada by the trusted brand Vortex, this fan is efficient in moving air and improving indoor air quality. The gray color adds a sleek and professional look to any space requiring an exhaust fan.