it was either 17 or 20 kw. has auto transfer switches to two panel boxes inside. ran pvc conduit to genset thru hole in bottom of unit.
we didn't do gas line, gas co hooked it up. I did rotate the unit so "back" was facing out-manuf wants 5' from exhaust to building openings, etc, and not enough clearance if facing away from house. has 5' from exh to house and still has 30+" for access to gen and elec cabinents this way.