DuraVent FasNSeal 4" 29-4C Stainless Steel Wall Thimble Sleeve Extension h23.63 Maximum 90

Maximum 90

the Osburn 2500 is for anyone who wants nothing complicated

Resembling a piece of shining modern art

35" Mission Door Front

Durable stainless steel construction tested to defy the elements

DuraVent FasNSeal 4" 29-4C Stainless Steel Wall Thimble Sleeve Extension h23.63 Maximum 90All 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