Steel construction Step-down diffuser rings 360° Air flow Durable white finish Mounting screws included Color/Finish Family: White Manufacturer Color/Finish: Whlte Series Name: Ceiling Diffuser Type: Step-down Length (Inches): 11.94 Rough Opening Length (Inches): 8 Rough Opening Width (Inches): 8 Weight (lbs.): 0.65 Width (Inches): 11.94 Adjustable Louvers: No Airflow Direction: 360-degrees Collar Included: No Commercial/Residential: Commercial/Residential Damper Included: No Hardware Included: Yes Installation Type: Surface mount Insulation Included: No Material: Steel Package Quantity: 1 Paintable/Stainable: Paintable Use Location: Ceiling Warranty: Limited lifetime CA Residents: Prop 65 Warning(s): No UNSPSC: 40101500