... Air Conditioning Ceiling Diffusers is widely used in ceiling,side wall, sidewall, door, air conditioner application, in broadcast room, hospital, theater,guest room etc ... the products as clients' request.Specification and Performances Table for Air Conditioning Diffuser: Neckpart Windspeed(m/s) 2 3 4 5 ... square diffuser, their performances data are equivalent as well Air Conditioning Ceiling Diffusers