3" to 4" Centric Increaser for Innoflue SW

The ISIA0304 from Centrotherm is a 3” to 4” Centric Increaser for 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).