Exhaust air chimney CL series

Versatile exhaust air chimneys with a unique design The exhaust air chimneys of our CL series have been in use for more than 25 years. They have proven their worth hundreds of thousands of times and come with the following exceptional characteristics. Main advantages -aerodynamic design for efficient air extraction; -made of polypropylene and with a smooth, dirt-repellent surface for high stability; -insensitive to sunlight and frost and therefore very durable; -easy to clean with a high-pressure cleaner; -labyrinth seal installed between roof duct and roof sheet for watertightness; -no additional sealing material required; -the self-supporting design means that supplementary suspension or bracing is unnecessary; -roof sheet and external ducts are made of GRP to allow for adjustments on site; -the roof sheet is supplied according to roof slope and profile, side or ridge installation, height above roof and colour of the roof; -easy to assemble and to dismantle; -the CL 74 actuator closes the chimney securely or reduces the volume flow exactly as required for minimum ventilation.