CMS Speed-Connect Fixed Extension Columns can be used with any 1 1/2-inch NPT accessory to lower projector to desired height. This product consists of 1 1/2-inch NPT column threaded on both ends (3-inch to 6' lengths). PRODUCT FEATURES: Includes an integrated port on one end for routing cables; Aluminum construction for easier installation - also saves on shipping costs. Product Type: Mounting component - ceiling mountable Dimensions (WxDxH): 48 in Recommended Use: Projector Max Load Weight: 411 lbs Material: Aluminum Color: Black Height: 48 in Material: Aluminum Color: Black Type: Mounting component Recommended Use: Projector Placing / Mounting: Ceiling mountable Max Load Weight: 411 lbs