The present invention provides a lounge valve mounting housing and assembly. The housing and assembly are useful for directing air through ducts, and particularly the assembly is useful for directing air, or other fluid, through Y-shaped junctions. The housing comprises in part a plate and a supported platform. The plate mounts to a duct. An actuator assembly can be affixed to the platform. The housing further includes a cylinder; a shaft is disposed within the cylinder and extends into the duct. A flapper affixed to the shaft can direct air depending on the radial position of the shaft. The housing and assembly offers weight and capital advantages over dual valve assemblies.