| 摘要 |
A new ventilator for spaces under slanted roofs or attics such as gable, hip and shed roof types; a ventilator using an elongate duct typically positioned between adjacent rafters under a roof, the duct inlet spaced downwardly somewhat from the ridge, the duct outlet discharging through an opening in the roof surface spaced further down from the ridge; the duct outlet configured to drain water from itself and the duct as well as protectable from winds, snow, hail, birds and the like. A like new ventilator useable under the roof panels of tanks and grain bins irrespective of the presence of rafters thereunder.
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