15
Figure 6 - Collar and Adjustable Duct, Chimney Installation
Table 3 - Minimum Overlap
Diameter Minimum Overlap for Adjustable Sections
8” 4”
10” 5”
12”, 14”, 16”, 18”, 20”, 22”, 24”, 30”, 36” 6”
-1"
X
1
2
3
4
5
6
8
9
10
11
10
12
13
12
13
7
X
1. Duct Section 1
2. Adjustable Collar
3. 3M Fire Barrier 2000 Plus
4. 7” Standard Duct Section
5. Duct Section 2
6. Adjustable Duct
7. Single V-band
8. Outer Shell Cover
9. Insulation
10. Double Wall V-band
11. Sheet Metal Screws
12. Mating Duct Flange
13. Shell Overlap
X. Measured Distance
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