Durable and easy-to-install, this Imperial 4 in preferred vent cap is ideal for effective clothes dryer and bath fan venting. The vent cap features a wide-mouthed anti-gust design for optimal airflow and a built-in damper that helps prevent back drafts. A pest guard helps keep birds and rodents from entering the home and has a hinged design for easy cleaning. Made for lasting use, this replacement vent cap is constructed from UV-resistant plastic that resists fading and discoloration from the sun and is paintable to match the exterior of your home. The vent cap comes complete with a 3 in crimped mounting pipe for ease of installation.