CMS speed-connect adjustable extension column can be used with any 1 1/2 inches npt accessory to lower projector to desired height. General information - manufacturer - chief manufacturing manufacturer part number - cms-006009 manufacturer website address - chiefmfg brand name - chief product series - cms product name - cms adjustable extension column product type - mounting extension package contents - cms adjustable extension column set screw additional information - notched adjustment design for length changes without disassembly compatibility - projector; product information - maximum load capacity - 500.00 lb; physical characteristics - height - 9.0 inches;