DuraVent FasNSeal W2 7" 90 Degree 316L Stainless Steel Double Wall Elbow 12in The Top Kit Extension is

The Top Kit Extension is a rigid section that can be used to extend the height of your flex liner system

Venting 4/3" Venting Glass Type Ceramic Certification Heater Dimensions

Used for horizontal termination sloping toward the appliance

Most Remii fireplaces can operate with the heat on or off

DuraVent FasNSeal W2 7" 90 Degree 316L Stainless Steel Double Wall Elbow 12in The Top Kit Extension isFasNSeal 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