The GI-200 & 300 share a patented split blower scroll and wheel design that pulls the same amount of air from the intake grille as it does from the remote inlet. No access door required. The GI-200 & GI-300 provide grille mounted and remote inlet exhaust, eliminating the access door & giving you an easier way to exhaust two spaces. Don’t use 2 fans, use a GI fan.