DuraVent PolyPro Concentric 4" x 6" Vertical Termination w12.7 Front-open and linear-opening styles are

Front-open and linear-opening styles are available

4 ⅛” Wall hole diameter

Model 540806 Clearance Zero/Zero clearance when installed into a masonry chimney and wrapped with a 1/2" ceramic fiber insulation blanket

a thermodisc

Fits: Cosmopolitan Rectangle

DuraVent PolyPro Concentric 4" x 6" Vertical Termination w12.7 Front-open and linear-opening styles arePolyPro Concentric provides users the most versatile polypropylene venting system for high efficiency, condensing appliances. The injection molded modular system is designed with a powder coated aluminum outer pipe and a polypropylene inner pipe. It does not require a locking band and provides users with a fast, safe, clean, and sustainable venting solution. The PolyPro Concentric system also includes elbows that have a smooth wall lining and are