DETAILS
DESCRIPTION
The Simpson Dura-Vent Type "B" gas vent system features a twist lock connection which offers a superior positive-lock that is fast and easy to assemble. When necessary, the system may be disconnected without damage to the product.
Highlights:
- Size: 3" x 12"
- For approved gas appliance
- OD is 5/8" larger than ID
- Aluminum inner wall, galvanized outer wall
- Boxed