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    HPR-230

    Greenheck Product # HPR-230
    Fabricated airfoil blades; pressure relief ¼ to 4 in. wg (.06 kPa to 1 kPa); back pressure of 6 to 13½ in. wg (1.5 to 3.4 kPa); velocity up to 5150 fpm (26.2 m/s) and temperatures from -40°F to 250°F (-40°C to 121°C).