These fans not only exhaust the air in your room, but provide overhead lighting as well. One 32-watt compact fluorescent lamp will provide plenty of overhead lighting while the convenient, 4-watt nightlight will help you find your way through the room in the dark. WhisperLite™ fans feature a totally enclosed condenser motor and a large, double suction blower wheel to quietly move air. A small wheel turning very fast will create more noise than a large wheel turning more slowly for a given airflow. The fan uses a wide blower wheel that moves a large amount of air at reduced RPMs. The blower wheel is also designed to draw air in from both sidesof the grill, which helps keep the noise down, as there is more area for the air to enter the wheel. The fans are designed to give you continuous, trouble-free operation for many years thanks in to high-quality components and permanently lubricated motors which wear at a slower pace. Since heat is detrimental to motor life (the cooler the environment, the longer the motor will last), the electrical configuration of the condenser motor allows it to operate at lower temperatures, increasing the life of the motor and bearings. And, the fan housing is made of heavy-gauge zinc galvanized steel and painted to protect it from rust. The fans have detachable adaptors, firmly secured duct ends, adjustable mounting brackets (up to 26"), fan/motor units that detach easily from the housing, and uncomplicated wiring all lend themselves to user-friendly installation. These fans also feature a double-hanger bar system for ideal positioning.
Finally, these Panasonic fans have built-in dampers to prevent backdraft, which helps to prevent outside air from coming back through the fan. Also, thanks to efficient, cool running motors and fluorescent lamps, it does not create excessive heat, allowing loose fill or batt insulation to be placed directly over the fan housing.