US Patent 10502447 Ventilation fan housing and mounting system

A fan housing and mounting system, including vent duct connector, that facilitates installation of a fan in a rough opening in a wall or ceiling, the housing having a first tab extending from the distal end of the wall and a second tab extending from the distal end of the wall, the first tab sized and shaped to engage a first side of the wall or ceiling, and the second tab sized and shaped to engage a second side of the structural member adjacent the rough opening to attach the housing to the wall or ceiling. A vent duct connector utilizes a novel notched flange to engage the housing in restricted installation spaces.