... Good diffusing ability, good-looking shape Ceiling Diffusers /Air Diffuser/ Air Conditioner Feature:Straight leaf vane, Diversified structure forms.Easy ... returnUse: For ceiling,side wall, sidewall, door, air conditioner application, in broadcast room, hospital, theater,guest room ... , their performances data are equivalent as well. Industrial Ceiling /Air Diffuser/ Air Conditioner/ Ceiling Diffusers