Designed for use with intake and exhaust applications, Attwood's cowl ventilators offer maximum protection from unwanted elements while still providing essential airflow. Installation is simple and can be accomplished from inside or outside the hull. Attwood Corporation has been an award-winning leader in engineering, testing, and manufacturing the highest quality marine products for over 100 years. We deliver safe and reliable lighting, fuel systems, water systems, seating & pedestals, swim ladders, custom upholstery, and general marine accessories that are easy to install and meet regulatory compliance.