DuraVent FasNSeal W2 8" x 10" 316L Stainless Steel Eccentric Increaser 137in This kit measures 36 inches

This kit measures 36 inches long and is designed for use with 4x7-Inch venting

Rear Width 60"

Feature tempered glass make sure safety

For use with Majestic Ruby 25" Direct Vent Gas Fireplace Inserts

DuraVent FasNSeal W2 8" x 10" 316L Stainless Steel Eccentric Increaser 137in This kit measures 36 inchesFasNSeal 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