Patent ID: 6471582
Filing Date: 2002-10-29
Classification: F24F

Abstract:
A system for providing a supply of air to a room, the system comprising:(a) a fan-driven vent unit having a vent output open to the room and an air intake opening; (b) an air duct for providing an air supply, the air duct having an air duct mating end; and (c) an adapter for coupling the air duct to the fan-driven vent unit, the adapter is mounted in a plenum space above a ceiling outside the room, the space containing air, the adapter comprising: a first mating section for coupling the adapter to the air duct mating end; a second mating section for coupling the adapter to the air intake opening of the fan-driven vent unit; and at least one wall having at least one supply-relief hole, open to said plenum space, for providing air from the plenum space outside the room to the air intake opening when the air duct does not provide the air supply.