Abstract: A damper assembly for use with an exhaust port in an upper wall of an exhaust hood comprises a mounting plate having a central opening, the mounting plate being attachable to the underside of the upper wall in overlying relation to the exhaust port. A damper plate is mounted on the mounting plate for pivotal movement about a pivot axis in a first rotational direction between a first limit position whereat the damper plate is fully removed from occluding the central opening and a second limit position whereat the damper plate occludes the central opening. A drive housing has a drive shaft drive extending therefrom for operative connection to the damper plate to drive the pivotal movement thereof. A damper actuator is mounted in the drive housing and connected to the drive shaft to effect bi-directional rotation of the drive shaft.

Abstract: A damper assembly for use with an exhaust port in an upper wall of an exhaust hood comprises a mounting plate having a central opening, the mounting plate being attachable to the underside of the upper wall in overlying relation to the exhaust port. A damper plate is mounted on the mounting plate for pivotal movement about a pivot axis in a first rotational direction between a first limit position whereat the damper plate is fully removed from occluding the central opening and a second limit position whereat the damper plate occludes the central opening. A drive housing has a drive shaft drive extending therefrom for operative connection to the damper plate to drive the pivotal movement thereof. A damper actuator is mounted in the drive housing and connected to the drive shaft to effect bi-directional rotation of the drive shaft.