Selkirk 3" to 8" Flexi-Sleeve (Flexi-Liner) btu1706 while the moveable door panel

while the moveable door panel allows access where needed

Coated Polyester Material

Illuminate the firebox without flame using the NIGHT LIGHT™ to boost ambient light and create a warm glow

75% HHV Efficiency

Selkirk 3" to 8" Flexi-Sleeve (Flexi-Liner) btu1706 while the moveable door panelSelkirk 3" to 8" Flexi Sleeve Insulation sleeve with tough poly exterior. Cable Ties included. Aluminum Flexible Liner Flexi Liner system is designed for relining existing masonry or listed factory built chimneys and vents serving Category I for natural gas or propane fired appliances. 3" to 8" Diameters: 3000 series aluminum, 2 ply Maximum flue gas temperature 470F 3" 8" diameter kits available in 25' and 35' lengths 3" 5" diameter kits available in