The XR motorized impeller is completely speed controllable, the manufacturer says. The unique coupling of the motor and impeller minimizes space requirements and provides vibration-free operation, the company states. Both motor and impeller are located directly in the airstream, where the impeller acts as a rotating "heat sink" with heat dissipation and efficient motor cooling. The impeller is suitable for either supply or exhaust applications. The XR has matching capacitors and inlet rings.
Continental Fan Manufacturing Inc., 203 Eggert Rd., Buffalo, NY 14215; 716-842-0670; 716-842-0611 (fax); firstname.lastname@example.org; www.continentalfan.com.