Metal Form Manufacturing’s Gravity Intake & Relief Ventilators feature a low silhouette design that operates on the pressure difference between the inside & outside of the building. They are available in a variety of materials including aluminum, copper and stainless steel. Popular options include an insulated hood, anti-condensate undercoating, dampers or shutters factory mounted in the ventilator throat and a hinged hood. An enamel finish is also available.
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