Base for cowl Bolt-on (220 x 420) Medium

A bolt-on cowl base is designed for use on brick chimneys. It features two flanges with pre-drilled holes, allowing the base to be securely bolted onto the brickwork. Once installed, it is completed with a matching cowl top to protect the chimney opening from rain while ensuring effective airflow. Proper waterproofing must also be applied during installation to prevent any water leakage between the cowl base and the brickwork.