Mounting brackets are fragile and plastic support is easily broken

Replaced the intake grille. The grille should be removed prior to cleaning. The entire part is plastic and easily broken so that the two tabs for the mounting screws are shattered and will not hold the part in place. If one attempts to clean the grille using only a moderate amount of pressure with a cloth the fragile plastic will break. The part is poorly designed. When the vent is removed to replace the charcoal filter, one may discover that the grille has already been broken in a previous cleaning operation.