- Double Wall. Made from a single strip of .005 316-L Stainless Steel
- Total overall thickness .012
- Smooth wall on the inside increases the draft by 20%
- 100% leakproof, air tight and unbreakable lock
- All purpose for use on oil, wood and gas
- Tested and approved to UL-1777 Zero Clearance (Tested by Conran Inspections Inc.)
- Corrugated interlocked seamed on the outside to provide strength and flexibility
- Available in diameters from 3" to 12" and in 4 1/2", 5 1/2" & 6 1/2" diameters with lengths up to 50 feet

SIZE I.D. SIZE O.D. SIZE
3" 3" 3 3/8"
3" 4" 4 3/8"
4 1/2" 4 1/2" 5"
5" 5" 5 3/8"
6" 6" 6 1/4"
6 1/2" 6 1/2" 6 3/8"
7" 7" 7 3/8"
8" 8" 8 3/8"
9" 9" 9 3/8"
10" 10" 10 3/8"
12" 12" 12 3/8"
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