The tilt rod is an exterior, fixed, vertical bar that runs down

either side of the shutter panel. An offset tilt system has the rod used to adjust the louvers 3/4 of the way along the shutter rather than the middle.This gives the impression of having no tilt rod at all when viewed from the outside. An offset tilt is less visible than a center tilt rod but has the benefit of making the shutter easier to clean.