TRUaire™ T-Bar Ceiling Diffuser, Lay-In, Series 2004CD, 8 in, 23-3/4 in Width, 4-3/4 in Depth, 23-3/4 in Height, Step Down Diffusion Pattern, White, Steel, Powder Coated, Import

TRUaire™ T-Bar Ceiling Diffuser, Lay-In, Series 2004CD, 8 in, 23-3/4 in Width, 4-3/4 in Depth, 23-3/4 in Height, Step Down Diffusion Pattern, White, Steel, Powder Coated, Import

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TRUaire's T-Bar Step Down Supply Diffusers go by many names, including cone diffusers, Lay-in diffusers, and T-Bar diffusers. The term ""T-Bar"" comes from the shapes of the railing that hold the ceiling tiles in a drop ceiling. The railing forms a grid of squares and T-Bar diffusers are designed to fit, or ""lay-in"" to those grid squares. The ""cone"" shape of the diffuser allows for maximum volume of airflow into the air-conditioned space. These Step Down Supply Diffusers feature a pristine white powder coat finish, extra heavy gauge steel, Seismic support tabs, and TRUaire's exclusive Super Collar to prevent any flex duct slippage or buckling under the pressure of a zip-screw gun. Options include choice of a two or three cone diffuser, choice of collar size, insulation, and either a SmoothGlide butterfly or radial damper.