2" to 3" Centric Increaser for Innoflue SW

2" to 3" Centric Increaser for Innoflue SW

The ISIA0203 from Centrotherm is a 2” to 3” Centric Increaser for Innoflue SW vent pipes. Suitable for vertical installation only.


  • Innoflue SW (Single Wall) is the only polymer vent system on the market listed to UL 1738;
  • Accepted and approved by over 50 North Amercian manufacturers of boilers, water heaters and furnaces;
  • Suitable for natural gas, propane and fuel-oil condensing and non-condensing (flue temp. below 248°F) appliances;
  • All parts (pipe, fittings, etc. - both black and grey) are UV resistant and suitable for indoor or outdoor installation;
  • Requires no primer/glue and does not leach chloride like PVC & CPVC;
  • Costs less and is faster and easier to install than stainless steel venting, no special tools needed, zero clearance to combustibles;
  • Industry-leading 2mm wall thickness;
  • Built-in gasket allows for adhesive-free installation which can be adjusted at any time;
  • May be installed through a wall, chimney, chase or between joists;
  • Lightweight, requires minimal support;
  • Made in the USA from environmentally-friendly PolyPropylene (PP).

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  • Views: 6238
  • 2" to 3" Centric Increaser for Innoflue SW QR Code
  • Model: ISIA0203
  • MPN: ISIA0203
  • Availability: 21
  • $ 17.45


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Tags: Vent Pipes, Heating, Heating Supplies, Condensing Boilers, Heating and Cooling