FOTILE JQG7505 Notice D'utilisation Et D'installation page 29

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HVI-2100 CERTIFIED RATINGS comply with
new testing technologies and procedures prescribed
by the Home Ventilating Institute, for off-the-shelf
products, as they are available to consumers. Product
performance is rated at 0.1 in. static pressure, based
on tests conducted in a state-of-the-art test laboratory.
Sones are a measure of humanly-perceived loudness,
based on laboratory measurements.
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