Duraplus chimney pipe is a factory built triple wall chimney kit. It is constructed of a stainless inner wall packed with insulation between a galvume middle wall with an airspace between the middle and outer wall.
Use DuraPlus 6" Triple Wall Chimney Pipe Kit when an air-cooled chimney is required by code or application.
Free floating inner liner maintains structural integrity in case of chimney fire.
2" Clearance to combustibles.
Limited Lifetime Manufacturers Warranty
UL listed to 103HT specs.
Outer dimension is 4" larger then inside diameter of chimney (6inch chimney is 10" on outside).