24x24x14 T1100 Ceiling Diffuser, Square, Architectural Plaque, Steel, Painted white (WH) finish, Integral round collar for easy flex duct connections, Plaque face is removable without the use of tools, double thickness center plate void of any visual spot welds or rivets, Full-face diffuser, Dims:24"H X 24"W X 4"D, Air diffuser panel dims (with legs): 18"H X 18"W X 3"D, 14" neck, Weight:12 lbs