Product Description
Aluminum Gas Flex Venting
“Dalsin Line”® Aluminum Flex Liners are used for venting category 1 heating appliances or direct vent appliances into a masonry chimney. Manufactured using Type 3003 aluminum, this heavy duty 2-ply liner is made from two strips of .005″, high grade aluminum for a total thickness of .010”
Materials and Construction
- Liner is made from 2-ply of .005″ thick type 3003 aluminum strip
- Components are made from .020 thick type 3003 aluminum
- Locking seam on liner is the strongest in the industry, with a unique locking system, the liner will not come apart.
- Large variety of termination caps available
- Components all incorporate stainless steel hose clamps for fastener free installation
Clearances
- UL and ULC listed to 1777 standard
- ANSI Z21.88-2009/CSA 2.33 (2009) Listed
- Zero clearance inside a masonry chimney.
Diameters
- 2″ – 12″ round liner available


Type 3003 (.030") thickness Aluminum components
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#212121

2-ply, Type 3003 (.010") thickness
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#212121

Durable Interlock flexible liner for superior strength
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#212121