Selkirk Flexi-Liner Type B Gas Vent Aluminum Flexible Chimney Relining Kit 5″ x 25′ — 1750025
SKU: 1750025
$480.00Description
- The Selkirk Flexi-Liner Type B Gas Vent Aluminum Flexible Chimney Relining Kit is a commercial-grade, multi-component venting solution engineered specifically to safely rehabilitate existing structural masonry or factory-built chimneys serving Category I gas appliances.
- Fabricated from a highly durable, 2-ply 3003 alloy seamless aluminum core, this rugged 5-inch diameter flexible pipe expands to a full 25 feet with an impressive 5:1 stretch ratio that resists ripping or puncturing over challenging offsets inside tight chimney bends.
- Rated for intense continuous exhaust temperatures up to 470°F, the turnkey system provides a zero-clearance internal profile while maintaining a permanent, continuous negative static pressure draft to cleanly exhaust carbon monoxide away from furnaces, space boilers, and water heaters.
- Ideal for mechanical piping contractors, brick masons, and HVAC installers, the 1750025 package arrives compressed inside a suitcase-style carton complete with a ventilation rain cap, roof flashing flange, mortar guard sleeve, and locking tabs to slash onsite labor metrics without requiring complex tool setups.
Specifications
Manufacturer / Brand
Selkirk Corporation (A Duravent Group Company)
Product Line / Series
Flexi-Liner™ Premium Aluminum Flexible Liner Series
Manufacturer Part Number / Master SKU
1750025
UPC
011352136005
ASIN
B00X4FVE0S
Liner Internal Diameter Size
5" Round (127 mm ID)
Liner Section Extended Length
25 Feet (7.62 meters)
Liner Core Construction Material
Tough, seamless 2-ply high-grade 3003 alloy aluminum (Thickness: 0.005" per ply / 0.010" total thickness matrix)
Maximum Flue Gas Temperature Rating
470°F (243°C) continuous exhaust threshold
Item Total Net Weight
8.19 kg (18.05 lbs total packed shipping configuration)












