Matthews Matthpoles are stronger and more durable than any similar product. Unique "expanding casting" provides the pressure for holding the Matthpole in place. Used primarily in studios for mounting seamless paper and backdrops with the use of Super Mafer Clamps and Swivel U-Hooks; the Matthpole has also been used in a horizontal position behind the President of the United States to support small lighting fixtures, in campaign venues for many candidates, and probably in many places we don't even know about. Manufactured in three overlapping sizes, Matthpoles can be used in openings as small as 30" to 178" which is almost 15 feet without the need for extensions.