Installs remotely in the interior of the home - not restricted by exterior applications. 8-position mounting brackets or suspends with special suspension chains (hanger kit included). Designed to work independently from Internal or External blowers, this is not a boost blower - the HLB series needs no other blowers in the system. Specially designed resilient motor mounts and housing isolation mounts prevent vibration noise. Flexible duct design allows straight-through or right-angle connections with built-in damper. Includes a 10" round ductwork transition(s).