The Sirocco Chimney Cowl is designed to cure problems caused by down draught, reduces rain entry into the chimney and features a stainless-steel bird guard mesh fitted to reduce bird and vermin entry. Easy to fit with no special tools required. Suitable for use with gas, oil, and solid fuels. Gas tested to BSEN 1856. If using a cowl with solid fuel it is recommended that you remove the bird guard mesh.