Air conditioning apparatus and installations, ventilating apparatus and installations, air filtering apparatus, installations, parts, accessories and equipment for air conditioning and ventilation including noise attenuation devices, apparatus for reducing noise levels in air conditioning and ventilating apparatus, silencing apparatus and equipment and mufflers for use in internal and external building fabric, building fitout and partitioning in residential dwellings, industrial, public, institutional, religious and commercial buildings, noise attenuation apparatus for use in the housing, air inlets and exhausts of fixed or moveable mechanical devices

Apparatus for ventilating; Air delivery apparatus for ventilating buildings; Installations for ventilating; Residential ventilating units; Ventilating apparatus; Ventilating installations; Ventilation apparatus; Ventilation installations