The EGC545 egg-crate return grilles are designed to fit common commercial applications were the architect requires a return grille without bars on the face and with limited sight through the grille. The EGC545 offers a 45° deflected 1/2”x1/2”x1/2” aluminum cube core and 1 1/4” flange. The EGC545 cube core design minimizes sight lines into the ceiling space with the tilted core design.