An adjustable mud ring assembly is provided that includes a base plate, a movable ring, and an indexing screw con-figured to move the movable ring with respect to the base plate between a first position and a second position. The base plate has a junction box connecting portion, a support connecting portion, and a stationary ring. The base plate can have an offset distance (D2) between the junction box connecting portion and the sup-port connecting portion where the offset distance is sufficient to allow the movable ring to move into stationary ring to the first position without protruding, at a lowermost point, into a junction box connected to the junction box connecting portion.