Vent assembly

Details Vent assembly Vent assembly

B - Operations, Transporting

60

H

98/49

B60H 1/26 (2006.01)

Patent

CA 1269274

ABSTRACT The specification describes a vent assembly for ventilating a space through an aperture in a roof or wall or the like. The assembly includes a flow passage having open ends, a vent opening intermediate the open ends operatively connectible to the aperture and independently operable closure means for closing each open end.

514767

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