The Westinghouse 1/2-Inch ID x 24-Inch Extension Down Rod is ideal for 11-foot ceilings. This 1/2-inch ID by 24-inch white extension down rod maximizes your ceiling fan's cooling benefits by providing the proper height. It features a white finish for a clean complement to your existing ceiling fan. Tapered threaded ends ensure a deeper connection and stronger bond for maximum durability. For optimum performance and safety, ceiling fan blades should be at least 7 feet from the floor but no higher than 8 to 9 feet in order to best cool a room. For ceilings 9 feet and higher, an extension down rod is required to bring the ceiling fan down to the proper height above the floor.