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    Spun Aluminum Gravity Ventilator with Flashing Flange, Size 12

    Greenheck Product # GRSF-12
    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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    SKUBASE/PANEL LENGTH x WIDTHTHROAT AREAINTAKE AREAPRICE
    Model / Size: GRSF-12
    22 x 22 in0.82 ft²2.52 ft²$179.58
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