DuraVent FasNSeal 6" 29-4C Stainless Steel Vent Length With Support Plate btu20000 7" and 8" diameter

7" and 8" diameter

5V AAA batteries and features an LCD display that uses a 4 button ON/OFF/MODE/SET system to communicate wirelessly to a 110V AC receiver

Heat-activated- Comes on when the fireside gets hot and pops when the fireside cools down

There is more maintenance with a catalytic unit

DuraVent FasNSeal 6" 29-4C Stainless Steel Vent Length With Support Plate btu20000 7" and 8" diameterAll FasNSeal (single wall) vent lengths and components feature patented built in mechanical locking band and triple lipped directional gaskets. All pipes and components are engineered with smooth clean welds located 90 from mechanical locking bands. This construction feature allows for ease of installation. The air space between the inner and outer wall on FasNSeal W2 helps to reduce the clearance to combustibles in addition to creating a heat shield