Single Grille return air can be made when the structure can be opened, and the filter used in conjunction. Single Grille manufacturers. Single adjustable blade, get a different air diffusion distances and different angles. Long-term supply of single monolayers of Xinzhou Grille Grille Yan _ _ production of air-conditioning is provided by a single layer Grille Wu County Yanda air-conditioning plant. Xinzhou single Grille _ _ production Yanda conditioned single Grille is Wu County Yanda air-conditioning plant (www.wcydkt.com) (www.wcydkt.com) this year introduced a new upgrade, the above picture is for reference Please call the telephone or pictures on this page, for the latest information contact: Wu Yusong.