Chimney Cowl - stainless steel - 100 x 100 x 40 cm | www.expondo.co.uk Stainless steel square base rotating chimney smoke extractor, base size 52 x 52 cm, ball diameter 39 cm, base diameter 30 cm Formed by an upper part that rotates on an axis, this wind chimney is made of stainless steel for all wind fume intake needs Attention: mounting the rotating chimney near the heat source may damage the operation., Stainless Steel Chimney Hat Chimney Cowl - Stainless Steel - 100 X 100 X 40 Cm | Www.expondo.co.uk Square Base 52x52cm Wind Extractor Stainless Steel Square Base Rotary Chimney Smoke Extractor, Base Size 52x52cm, Diameter Sphere 39cm, Diameter Base 30cm · Formed by an upper part that rotates... Activates with wind or heat under the air. Formed by an upper part that rotates on an axis, this wind chimney is made of stainless steel for all wind fume intake needs. Wind Cap Stainless Steel Chimney Rain Cap - Exhaust Pipe Cover for The stainless steel square base swivel chimney is also used in all cases where it is necessary to ventilate premises, such as sheds, technical rooms, etc.