The Turbo™ inline duct fan is designed for bathroom exhaust, kitchens, primary exhaust, general ventilation, and other applications. Available for 4-, 6-, 8-, and 10-in. duct sizes and a performance range from 15 to 628 cfm, the fan is shipped assembled and with a mounting bracket and duct ties for ease of installation, says the company. Used for exhaust or supply duty, the fan features an external rotor motor with a non-overloading, backward-inclined wheel. Airmaster Fan Co., Dept. TPR, P.O. Box 968, Jackson, MI 49204; 517-764-2300; 517-764-3838 (fax).