Texas Buildmart offers High Quality Standard Linear Slot Diffusers. This model shoots a 180-degree spread with option to adjust to one side or the other. They have decorative directional dampers. Modern, crisp, clean lines and architecturally appealing. Solid extruded aluminum profile with welding - Electrostatic Paint. This product can be used as a supply and as a return register vent cover for ceilings, walls, and floors but looks like a Modern Contemporary looking fixture. If this model is used as a Return, please make sure this vent cover is placed in full open position or remove the directional dampers. This is a Patent Pending Product.