Swivel smoke extraction chimney with square base in AISI 304 stainless steel. Base dimensions: 32 x 32 cm. Diameter of sphere Formed by a top that rotates on an axis, this wind turbine is made of stainless steel for all wind fume suction needs It is activated with the wind or with the heat of the air below. Stainless steel square base swivelling chimney, base size 32x32cm Fireplace Draft Improvement Shelter 13-in W X 13-in L Stainless Steel Stainless Steel Square Chimney Cap In The Chimney Caps Department At AISI 304 Chimney Accessory Base size 32 x 32 cm, ball size 35 cm, base diameter 25 cm, height 44 cm. This wind chimney is made of an upper part that rotates around an axis, is made of... The stainless steel square base swivel chimney is also used in all cases where it is necessary to ventilate the premises, such as sheds, technical rooms, etc. Formed by a top that rotates on an axis, this wind chimney is made of stainless steel for all wind suction needs of fumes. Stainless Steel Chimney Hopper. Shop Onlne at Factory Prices Regular annual maintenance with the addition of oil in the bearing cylinder is recommended.