Broan HLB9 In-Line Blower for Range Hoods, 800 CFM Installs remotely in the interior of the home Installs with either 8-position mounting brackets or special suspension chains for hassle-free installation Motor mounts and housing isolation mounts prevent vibration noise Flexible duct design allows straight-through or right-angle connections with built-in damper Includes 10-Inch round ductwork transition(s)