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    Picture for category Gravity Ventilators

    Gravity Ventilators

    Models

    GRS
    Picture of GRS

    Model GRS is an aluminum ventilator designed to be used as an intake or relief unit on natural gravity or negative pressure systems. The GRS has a curb cap and requires a roof curb for installation.

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    GRSF
    Picture of GRSF

    Model GRSF is an aluminum ventilator designed to be used as an intake or relief unit on natural gravity or negative pressure systems. The GRS has a flashing flange for roof attachment.

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