DuraVent FasNSeal W2 6" 316L Stainless Steel Double Wall Test Port concrete If using fire glass

If using fire glass

Ark 40 fits right at home in outdoor settings

It is used for the top part of the burner

The inner liner is made of corrosion-resistant stainless steel

DuraVent FasNSeal W2 6" 316L Stainless Steel Double Wall Test Port concrete If using fire glassFasNSeal W2 (double 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