Features:
Includes heat/energy transfer core, pre-filters, fan and blower assembly. Automatic, economical, built-in defrost available for operation to design temperatures of -40F. Electronic ventilation fan timer option and variable fan speed control. Low voltage, high-speed override. Easy to clean with a vacuum, cross-flow enthalpic core assures years of trouble-free operation.

Benefits:
Perfect Window™ Fresh Air Energy Recovery Ventilation Systems Energy Recovery Ventilators provide proper levels of ventilation with energy savings by transferring heat and moisture between the exhaust and fresh air streams.