EG-F EG-H EG-R Eggcrate Type Air Grille Material: Extruded Alloy A6063 Surface finish: Baked White Powder Coat / Natural Anodized Features: This type of return grille offers the largest free area for return air movement, on the other hand it can be used as a decoration on ceiling. The dimension of each aluminumlattice is 12mm*12mm*12mm. Application: Ceiling downward projection type air distribution Color: common white / customerized Price: will be quoted as per your requested size