Air Conditioner Grille Material: Aluminum Alloy Color: White or Gray ... widely used in ceiling,side wall, sidewall, door, air conditioner application, in broadcast room, hospital, theater,guest room etc ... products as clients' request.Specification and Performances Table for Air Conditioner Grille:Neckpart Windspeed(m/s) 2 3 4 5 ... , their performances data are equivalent as well Air Conditioner Grille