VKM 100 4" inline centrifugal ventilation fan metal casing

Durable steel housing with polymer coating Moves air at a rate of 174 CFM, which ventilates up to 500 sq. ft. space Great for high static pressure applications Ideal for long duct runs Long life ball bearing motor Thermal overload protection Certified by ETL for product quality and safety HVI certification warrants performance and efficiency Supplied with mounting bracket Compatible with 4? duct