Wonderful French vintage roman helmet style revolving galvanized chimney cowl. The Cowl revolves with the direction of the wind,identical to a weather vane and is designed to increase draught on chimneys. The cowl turns so it always has its back pointing into the wind. so basically the wind sucks the fumes and smoke out of the chimney and means there is never a downdraft. it also prevents rain going into the flue and as it is always revolving with the wind direction it acts as a bird scare.also a fabulous decoration piece for the garden or chimney. Excellent vintage condition with just a layer of dust that will be removed before sending out and a few storage marks etc. Can be push fitted onto an existing chimney pot and tightened using the bolts provided on the fitting band Dimensions width 26 cm`s 9.8 inches Total Height overall 70 cm`s 27.5 inches fixing strap 200mm - 20cm`s - 8" pot size The cowl weighs in at just over 3 kg`s before packing so worldwide shipping is not so cheap sorry.