Allows the 30 deg offset of a chimney. Designed to by-pass an obstacle, such as a joist. A maximum of two offsets (4 elbows) is allowed. The chimney's angle of inclination must not deviate more than 30° from the vertical position. The minimum recommended height for an installation with a 30 deg offset is 15'.
Also available: 6", 7" and 8" I.D. Stainless steel casing.
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