The Auxx-Lift may be mounted on any ceiling (rafters/joists/sloped ceiling) THIS Package IS OPTIONAL: Generally the lift's motors run parallel on the ceiling joists. If you'd like the motors to operate perpendicular for your joists you may need this kit. This extra kit will flip the platform ninety Degrees Betting https://arthurovcio.eveowiki.com/1542491/an_unbiased_view_of_auxx_lift