The ICVL241 from Centrotherm is a 2”/4” x 12” Innoflue Concentric Vent Pipe. 12" (1ft) is the effective length, actual (overall) length is 14.5".

Features:

• Innoflue Concentric is the only polymer vent system on the market listed to UL 1738;
• Incorporates flue exhaust and air intake into a single product - requires less space and less wall/roof penetrations;
• 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;
• 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;
• May be installed through a wall, inside a masonry chimney, sheetrock chase or between floor joists;
• Lightweight, requires minimal support;
• Made in the USA from environmentally-friendly PolyPropylene (PP).