The A503M series is a 3-way square aluminum air diffuser used for ceiling openings. The face construction allow for three-way air deflection. Our Smooth glide technology ensures rattle free and quiet airflow from your central air system. Smooth glide also provides for smooth opening and closing of your back dampers. Our high quality product will ensure years of continuous use. TRUaire™ Directional Diffuser, Flush Louvered Face, Series: A503M, 6 x 6 in, Square Diffuser Shape, 9 in Width, 2-3/8 in D, 9 in Height, 3-Way Diffusion Pattern, Pristine White, Aluminum, Powder Coated, Import