The Imperial Steel Return Air Sidewall Grille allows you to circulate heated or cooled air throughout your home or office efficiently and discreetly. The white-painted finish provides a subtle, unobtrusive way to return air from your cooling or heating system back into the main ductwork. It provides ample space to circulate air while maintaining a slim profile that won't distract from your interior decor. Perfect for a basement mechanical room, utility room, or commercial space that demands function above all else.