Stainless steel square base rotating chimney chimney, base size 47 x 47 cm VEVOR Chimney Cap, 431.8x431.8mm, 304 Stainless Steel Fireplace Chimney Cover, Not Easily Rotating chimney chimney, smoke extractor, stainless steel chimney chimney with oil bath bearings. Activates with wind or heat under the air. Smoke Extractor Cowl EINSIDE Rotating Chimney, Wind Hat For Fireplaces Made Of AISI Smoke Draft Improvement Attention: mounting the rotating chimney near the heat source may damage the operation., HY-C 9.5-in W x 9.5-in L Stainless Steel Square Chimney Cap at The stainless steel base swivel chimney chimney pulls smoke allows you to improve the draft of your chimney. Formed by an upper part that rotates on an axis, this wind chimney is made of stainless steel for all wind fume intake needs.