The key to proper ventilation in baths is spot ventilation at the source. Premium Bath fans can effectively ventilate several areas of the bath or two different bathrooms. Small 7in. ceiling grilles (with or without lights) can be easily positioned directly over showers, whirlpool tubs, steam showers, toilet or vanity. The fan motor is installed away from the living area for super quiet operation. PB fans are designed for or continuous operation to meet ASHRAE Standard 62.2. Features:; Uses 4; and 6; duct. UL Listed for wet locations. cULus Ventilation With Illumination