Stainless Steel Chimney Flue Cowl Pipe Rain Cover Protector Cap Ending 200-250mm by Darco Cap in a box is a chimney cap of full value that fits in ... a pizza box. Rigid design and reliable mounting method ensures that the cap is as durable and aesthetic as a chimney cap. Unique mounting method, with no usage of tools needed, makes it a good solution for all chimney pipe endings. Universal size: 200-250mm. Material: stainless steel. Destination: ending of metal round chimney pipes; protects the chimney duct from rain or snow.