Models: BPT13-13P with UL Air Direction: 90CFM Duct Diameter: 4" (10.16CM) Color box (MM): 34.5*29.2*18CM Noise (sone): 1 Housing dimension(in): Grille dimension(in): Housing dimension(in): 10.08*10.08*5Grille dimension(in): 11.7*10.7*0.94 Power Consumption: 27.6W