4" PVC (100mm) to 4" Innoflue SW Centric Increaser

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The ISIA10004 from Centrotherm is a Centric Increaser for 4” PVC (100mm) to 4” Innoflue SW vent pipes. Suitable for vertical installation only.

Features:

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).