The flex-a-spout product is the most cost-effective way to protect your home. The downspout extension expands between 22” to 55” and helps you divert water away from your home. If additional lengths are needed additional flex-a-spouts can act as extensions by cutting the end's and snapping them together. The Flex-a-spout is designed to fit 2" x 3" and 3" x 4" downspouts.