Type-B Gas Vent products are tested and listed to UL 441 for approved gas appliances and feature our innovative twist-lock connection and locking tab, eliminating the need for sheet metal screws. Metal-Fab Type B Gas Vent combines hemmed flues and casings that maximize product durability and reliability and minimize installation time. Designed for versatility, Metal-Fab Type-B Gas Vent products 3″-6″ adapt to major competing brands and when installed establish a UL Listed connection.
What’s Included
- 20″ Guy Ring
Features
- Available in 10″, 12″, 14″, 16″, 18″, 20″, 22″, 24″, 26″, 28″ and 30″ Sizes
- For additional support above the roof.
Specifications
| Application | For use with category I natural gas-burning or propane-fired appliances such as gas boilers, fireplaces, furnaces, unit heaters and radiant tube heaters. |
| Listings/Standards | NFPA 54 NFPA 211 UL 441 |
| Clearances | 1″ Minimum clearance to combustibles for 3″ – 24″ |
| Diameter | 20″ |
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