This tough, bendable polyethylene Flex A Spout™ downspout extension literally telescopes from 25" out to 55". That's more than four feet! The purpose of a flexible spout: to carry gutter water away from your foundation. This flexible downspout fits 2" x 3" and 3" x 4" downspout elbows. Join two or more for longer runs. This downspout extension can be buried.