DuraVent DirectVent Pro Wall Firestop Size:4"x6.625" the Osburn 3500 is essential

the Osburn 3500 is essential for any spacious home

which eliminates the need for replacement

110V Installation Manual

Roasting Sticks — Perfectly designed four-pack

Optional glass doors available in black trim finish for improved safety

DuraVent DirectVent Pro Wall Firestop Size:4"x6.625" the Osburn 3500 is essentialOverview DuraVent is the premier company in the venting industry. With a broad range of engineered venting products, DuraVent has earned its reputation as the industry leader by offering innovative, safe, and professional products for the HVAC and Hearth markets. DuraVent's direct vent is specified by nearly every major stove and fireplace manufacturer in the U. S. and Canada, with the largest choice of termination caps for direct vent available.