Presents a booklet intended as a guide to designers or the contractors who install air diffusion equipment. States it is complementary to prEN12238 Air Terminal Devices - Aerodynamic Testing and Rating for Mixed Flow Applications, and prEN12239 Air Terminal Devices - Aerodynamic Testing and Rating for Displacement Flow Applications. Chapter headings are - Introduction to air distribution technology, Conventional air terminal devices and their normal functions, Selection of air terminal devices, Sound characteristics, Duct entry conditions, The fixing and installation of air terminal devices, Measurement on site, regulation of air terminal devices. Supplies a bibliography and a list of supporting companies.