It adapts automatically to the airflow, because it spins independently downwind. As a result it arranges for an ideal combustion. Besides it protects your chimney from outside influences like rain or snow.
125mm S/Steel Self Adjusting Spinning Dragon CHIMNEY COWL - with Push in Base
Lobster Back/Dragon Chimney Cowl Antique
Self-adjusting Dragon Chimney Cowl Spinner push-in 7" 8" 10" stainless steel
200mm S/Steel Self Adjusting Spinning Dragon CHIMNEY COWL - with Push in Base
Self-adjusting Dragon chimney cowl spinner square base | 7" 10" 250 mm Roof Cap
Mad Cowl Junior Antidown Draught Chimney Cowl Terracotta 250mm/10in MAD14
