CMS-0203 CMS Speed-Connect Adjustable Extension Columns can be used with any 1 1/2" NPT accessory to lower projector to desired height. Provides up to 2' range of height adjustment in 1" increments depending on model (6" to 12' lengths). Includes set screw for added rigidity Notched adjustment design for length changes without disassembly Flow-through cable management with an integrated port on one end for routing cables (do not include this line on the CMS006009) Aluminum construction for easier installation – also saves on shipping costs SPECIFICATIONS Length: 24 - 36" (609.6 - 914.4 mm) Color: Black (also available in Silver and White) Weight Capacity: 500 lbs. (186.62 kg)