Spruce SDB190T 148 CFM 4 in. Inline Duct Boosting Fan Kit with Time Delay Pressure Sensing Switch in White

Spruce inline fans are ideal for ventilating a new addition and/or for improving the efficiency of an existing air system. Duct boosting will give an old heating and cooling system the lift necessary to get conditioned air into newly expanded living or working areas as well as any other areas where it is needed. Mechanical ventilation is often necessary to assure better indoor air quality in today's tightly sealed homes and commercial buildings. A Spruce inline fan enhances air quality and helps to meet Energy Star IAQ requirements with continuous ventilation, which reduces source pollutants in a variety of home and business settings, including workshops, hobby rooms, smoking rooms and other indoor spaces where pollutants enter the air. Spruce duct boosting kits feature interior mount and lightweight, durable construction; they are rated for continuous operation.