This Speed-Connect Adjustable Extension Column lowers projector to desired height.Features: * Provides height adjustment in 1 increments * Knotched design for adjustment without disassembly * Flow-through cable management with cable exit port * Includes set screw for add stability * Consists of 1.5 NPT column threaded on both ends * Use in combination with any Chief 1.5 NPT ceiling plate or other accessorySpecifications: * Length: 12 - 18 (304.8 - 457.2 mm) * Color: Black (also available in Silver and White) * Weight Capacity: 500 lbs (226.8 kg)FeaturesBracket TypeColumn ColourBlack Max Weight 226 KG