The CMA330 allows projector cables to be routed through the extension column and out the top of the ceiling plate for cable management. Features: Includes 8" (203 mm) square ceiling plate with 1.75" (44 mm) high offset Offset provides cable exit when mounting to a flat ceiling surface Attaches to 1.5" NPT threaded extension column Overall height is 4.5" (114 mm) Specifications: Weight Capacity: 500 lbs (226.8 kg)