making it perfect for general purpose inline ventilation. Low profile construction for ease of installation in confined spaces. • Built with a well balanced air over motor impeller assembly, and a backward inclined wheel for smooth quiet operation. • High efficiency motor. Available for  5” duct sizes. • Fan housing constructed of heavy gauge satin coat steel with baked enamel finish. • Suitable for use in high-rise condominium, office buildings, schools, boardrooms or where high volume quiet ventilation is required. • The models  RI-200 meet All  States Ventilation and Indoor Air Quality Code.