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
- 12″ Drafthood Connector
Features
- Round and Oval Type-B Gas Vent is listed by Underwriters Laboratories INC. for use with approved gas furnaces, heaters, fireplace, and boilers. Metal-Fab meets or exceeds all recognized gas venting codes, standards, or requirements, whether Local, State, or United States.
- The maximum temperature rating for B-Vent is 530°F.
- Double Wall Construction
- SureLock™ B-Vent Locking System: SureLock™ is standard on 3″ – 6″ diameters.
- Note: The vent overlaps 1.5″ when joined together. Therefore, the assembled length is 1.5″ less than the listed length.
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. |
| Clearances | 1″ Minimum clearance to combustibles for 3″ – 24″ |
| Listings/Standards | NFPA 54 NFPA 211 UL 441 |
| Flue Material | Aluminum Alloy .012″ thick for sizes 3″ to 8″ diameter |
| Casing Material | Galvanized Steel .018″ thick G90 Steel for sizes 3″ to 14″ diameter |
| Diameter | 12″ |
| Height/Length | 4.88″ |
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