Threaded on both ends, the black Chief CMS-0305 is a 3 - 5' (91.4 - 152.4cm) adjustable extension column that can be used with any 1.5" NPT accessory to lower a projector or flat panel display to a desired height. Includes a continuously adjustable notch for length changes (1" increments) without disassembly, aluminum construction for fast and easy installation, and flow-through cable management with an integrated port for routing cables. Supports up to 500 pounds.