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    OFSD-311

    Greenheck Product # OFSD-311
    Class I leakage rated with airfoil blades, pressure up to 8 in. wg (2 kPa), velocity to 4000 fpm (20.3 m/s) and temperature to 350°F 177°C).

    Certifications:

    • AMCA Air Performance
    • California State Fire Marshal (Listing # 3225-0981:0103 and 3230-0981:0104)
    • UL 555 and UL 555S (Listing #R13317)
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