The BBM is a fixed position damper used to balance draft in a boiler connector. It is used when multiple heating appliances are connected to a single, common chimney. For chimneys using slip connections.
The manually operated positioning handle is used to set the damper position. A locknut is used to fix the position.
| Available Sizes (ID) | 6" to 36" (150mm to 900mm) |
| Connections | Male/male |
| Material | Stainless Steel 316L |
| Temperature Rating | 1400°F (760°C) / 1800°F (980°) intermittent |
| Warranty | 2-year Factory Warranty |
| Listing/Certification | UL 378 Standard for Draft Equipment ULC/ORD-C378 |
