Single and double deflection grilles are suitable for supply air for either side wall, ceiling or even  exposed duct applications. The Double deflection grille has two rows of blades set at 90° apart which permit up to 45° deflection of the air in two planes, while single deflection has only one row. 

Material can be aluminium, stainless steel or wood or ABS even steel. We keep in stock most aluminium and plastic grilles and some wood models.