Material & Construction

InnoFlue® Concentric integrates our industry leading InnoFlue® Single Wall, flame retardant, polypropylene technology and white powder coated metal outers. This integrated system allows both flue gases and fresh air to flow through a single component, reducing installation time and roof or wall penetrations.

InnoFlue® Concentric is ULC-S636 listed at zero clearance to combustibles, making it approved for use in Canada.

Concentric Vent Lengths and fittings are joined using high performance EPDM H1 gaskets which are suitable for service pressures up to 20 inches of water column (5000Pa) and are resistant to corrosive condensate.

InnoFlue® Concentric is used to vent individual appliances. InnoFlue® Concentric can be combined with InnoFlue® Single Wall and InnoFlue® Flex. For more information on system configurations, visit the InnoFlue® Concentric Solutions page.


  • Diameters: 2/4″ (60/100mm), 3/5″ (80/125mm), 4/6″ (110/160mm)
  • Concentric Vent Lengths (Effective Lengths): 1′, 2′ & 3′
Technical sheet