Pottorff is one of the leading manufacturers of louvers and dampers in the industry. Pottorff is committed to superior customer service - delivering high-performing HVAC products on time and at competitive prices. Pottorff offers a complete line of Louver and Damper products and accessories: Air Control and Backdraft Dampers Ceiling Radiation Dampers UL Rated Fire, Fire-Smoke and Smoke Dampers Louvers and Penthouses Actuators and Accessories