The 514SC series are square face, 3-cone, round neck ceiling diffusers and are available in a variety of frame styles to help meet the architectural requirements of today’s ceilings. The spacing of the inner cones in relation to the backpan result in a design possessing anti-smudge characteristics, preventing the buildup of particles on the ceiling, which is achieved by minimizing the low pressure region inherent to most 4-way directional blow diffusers. Also known as concentric cone diffusers, 514SCs are constructed of one-piece stamped cones which provide a clean, smooth appearance without mitered corner joints. The 514SC series delivers strong performance in variable air volume systems. The consistent, horizontal airflow ensures efficient air distribution throughout the space, even as the airflow rate changes across a wide range.