CMS003 3" (76 mm) Speed-Connect Fixed Extension Column The CMS Speed-Connect Fixed Extension Columns lower projectors to the desired height. Features: Aluminum extension column features easy installation and maximum strength Consists of 1.5" NPT column, threaded on both ends Use in combination with any Chief 1.5" NPT ceiling plate or other accessory Specifications: Color: Chrome Length: 3" (76.2 mm) Color: Black Weight Capacity: 500 lbs. (186.62 kg)