attachment point (see Fixture overview on page 7) if the fixture is to be installed in any location where it may fall and cause injury or damage if the primary attachment fails. Mounting the fixture on a truss The MAC Aura XB can be clamped to a truss or similar rigging structure in any orientation. Warning! Use a rigging clamp with an M bolt if suspending the fixture from its base. The clamp must be screwed into the central threaded hole in the fixture base. The M bolt must protrude 20 - 30 mm (0.8 - 1.2 ins) into the fixture base. An M bolt that is suitable for many types of rigging clamp is supplied with the MAC Aura XB, but you must pass the bolt through the clamp and check that the distance the bolt will protrude into the fixture base is within the 20 - 30 mm limits before using it. If the bolt is not within these limits, you must find an alternative bolt that is.