● When performing high-volume exhaust, such as with a range hood in apartment buildings, ensure an adequate supply of fresh air to match the exhaust volume. ● "Differential pressure sensitive type" that takes in outside air by sensing the pressure difference between the inside and outside caused by exhaust from range hoods, etc. ● You can select fully closed - open (differential pressure sensitive air supply) - fully open (natural air supply) by operating the shutter lever. ● Supplies fresh air by removing pollen and dust of 10μm or more with the air purification filter. ● Minimum applicable wall thickness 127mm (174mm for pipe hood with fire damper) ● Replacement air purification filter (sold separately): FY-FB1815 ● Do not use in cold regions. ● Condensation may occur under conditions of outdoor temperature -5°C or lower, indoor temperature 20°C, and indoor relative humidity 50% or higher, so wipe it off with a cloth. ● Use a deep-type or wind-resistant (with insect screen) pipe hood. ● VP pipes with an inner diameter of 146mm cannot be installed. ● Temporarily close the shutter during strong winds, rain, or snow such as typhoons and blizzards. ● Suitable for use with range hoods. ● When installing, pay attention to the relationship with fire alarms. ● Application: Entire building ● Product Model Number ・Panasonic (PANASONIC) ・FY-DRV062