| 主权项 |
1. An exhaust vent for allowing fluid to exit a building through a conduit opening on an external wall of the building, the exhaust vent comprising:
a mounting plate mountable on the external wall of the building, the mounting plate having an opening therein; a main body attachable to the mounting plate, the main body having a rear face facing the building, a front face facing away from the building, an aperture extending from the rear face to the front face, a top portion, and a bottom portion, the opening of the mounting plate and the aperture of the main body being in fluid communication with the conduit; a flap pivotally attached to the main body, the flap being movable between a closed position wherein the aperture is blocked by the flap and an opened position wherein the flap extends away from the aperture in response to a pressure of the fluid being expelled from the conduit, the flap having an inner surface facing the front face of the main body, the inner surface having a flange projecting therefrom; and a first seal provided on the front face of the main body for sealingly closing the aperture, the first seal surrounding the aperture, the flap abutting the first seal when the flap is in the closed position; and the main body being provided with a groove, a second seal being recessed within the groove, the flange of the inner surface of the flap fitting within the groove, and abutting the second seal when in the closed position. |
