The 170 return air grille used for sidewall or ceiling openings. This product is constructed to ensure maximum airflow and compliment your home decor. Using This return air grille to outfit your ventilation system will improve your home air circulation. Pristine white powder coat finish. 1-way grille with 1/2" stamped louvers set at a 30 degree blade pitch. • Heavy gage all steel construction • Model size indicates duct opening measurements not wall opening measurements • Countersunk screw holes • •
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