The Bilco Company modified the design of its acoustic automatic Type ACDSH fire vent, resulting in an increase in its sound transmission class (STC) rating from 45 to 46. The new design eliminates the vent’s lower, downward opening covers, which simplifies operation and reduces overall cost.
The Type ACDSH fire vent is a double-leaf model designed to guard against noise intrusion while providing dependable automatic venting in the event of fire. The vent aids firefighters by removing smoke, heat, and gas from a burning building. The latest version of the Type ACDSH vent carries an STC-46 sound rating and is well suited for large buildings, such as concert halls, theaters, auditoriums, and casinos.
