DuraVent FasNSeal W2 8" x 10" 29-4C Stainless Steel Eccentric Increaser btu57700 Model SF4-25CKT Clearance UL and

Model SF4-25CKT Clearance UL and ULC listed to 1777 standard

The body of this set is Graphite Finish

Clean Energy: No fuel or venting is required

Choose a mounting option based on how you want your heaters to be installed

3 x Antishort bushing for BX cable

DuraVent FasNSeal W2 8" x 10" 29-4C Stainless Steel Eccentric Increaser btu57700 Model SF4-25CKT Clearance UL andFasNSeal 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