The compact and aerodynamic shape of this cowl makes it perfect for combatting downdraught. The anti-downdraught cowl comes fully assembled complete with a strap fixing. It is made from 1.2mm aluminium and stainless steel and the corrosive resistant powder coat finish makes this chimney cowl suitable for all fuels. No Special tools required when fitting This anti-downdraught cowl also serves to reduce rain ingress and prevent animal entry. Available in buff and terracotta finishes.