Ceiling Diffuser Ceiling Diffuser Diffuser Shape Square Diffuser Face Type 4-Way Adjustable Diffuser Duct Size 8 in Material Steel Diffuser Color White Diffuser Finish Powder Coated Epoxy Air Diffusion Pattern 360 Degrees Insulation None Width 23 in Depth 1 3/4 in Height 23 in Diffuser Adjustable Yes Compatible With T-bar Suspended Drop Ceilings Includes 4-Way Adjustable Diffuser Back Pan for 8 Inch Duct Electrostatic Filters