The Auxx-Lift may be mounted on any ceiling (rafters/joists/sloped ceiling) THIS Package IS OPTIONAL: Usually the lift's motors run parallel into the ceiling joists. If you want the motors to operate perpendicular in your joists you will require this package. This additional package will convert the platform ninety Levels Customer https://auxx-lift53298.nico-wiki.com/1511107/the_smart_trick_of_auxx_lift_products_that_no_one_is_discussing