DESCRIPTION: 

Ring - type chimney cowl is a static chimney cowl, which is designated to regulate and stabilize the chimney draught. When the chimney draught is too big, we can decrease it by lowering the position of the inner plate, which reduces cross-section of the outlet from the cowl.

USAGE:

• when there are wind fluctuations on the chimney duct ending, caused by its bad location 
• when there is an unfavorable terrain configuration, with strong and frequent winds 
• when there is a lack of chimney draught or it is too big