This Speed-Connect Adjustable Extension Column lowers projector to desired height. It is made of aluminum and features easy installation and maximum strength. It also has flow-through cable management with a cable exit port. It 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: Length: 12 (304.8 mm), Color: Black, Weight Capacity: 500 lbs (226.8 kg). Features: Bracket Type: Column, Colour: Black, Max Weight: 226 KG. Save installation time and maximize security with these fixed columns.