The RK Series inline tube fans are intended for use in general ventilation applications. The units come with a plastic housing designed to fit standard-size round ducts, including 4-, 5-, 6-, 8-, and 10-inch sizes. These fans feature eight different models, with a range from 176 to 721 cfm. Other features include an external rotor motor and integral impeller. According to the manufacturer, the motor design allows for 100 percent speed control, even with inexpensive electronic speed controllers. A variety of accessories are available, including a fan mounting bracket that does not penetrate the fan housing.

MVP Inc., 1748 Independence Blvd., Ste. G-4, Sarasota, FL 34234; 941-360-2422; 941-360-2522 (fax);

eProduct #189