Get the benefits of ventilation without the visual clutter by specifying Panasonic Eco Products Division’s Energy Star-rated WhisperRecessed fans. The new 80-cfm fan/light combination is recessed into the ceiling, creating a streamlined look. The ventilation fan can be installed in a 4-in. or 6-in. duct without an additional adapter and operates at sound levels as low as 0.8 sones.