Why does Koch-Glitsch specify rectangular or square stacks on chimney trays?
Rectangular risers can be formed so that the walls are an integral part of the tray floor. This eliminates most if not all material waste and reduces cost. In addition, only the vertical seams need welding, whereas round risers require welding of the vertical seam and welding to the tray floor also. Several small risers give better vapor distribution than one large riser and are therefore recommended. On occasion, the use of several small risers permits a reduction in the space required for installation.
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- Why does Koch-Glitsch specify rectangular or square stacks on chimney trays?
