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About This Product
The 3EFC5 expandable flex connector is designed for gas-fired appliances equipped with draft hoods and other appliances approved for use with Type B gas vent. This single-wall expandable flexible gas vent connector provides a simple connection between the appliance and a Type B vent system. It is UL listed and requires only a 1 in. minimum airspace clearance to combustible materials. Its flexible design supports multiple installation setups, including single-vent or combined-vent applications.
Highlights
- Expandable flexible gas vent connector system helps simplify many gas appliance vent installations
- No elbows required for installation
- Integrated draft hood connector
- Expands from 2.5 ft. to 5 ft.
- Check appliance installation instructions for application details
- Requires 1 in. minimum airspace clearance to combustibles
- Can be used for single-vent or combined-vent setups
- Provides 360° flexibility
- Type B gas vent is also commonly called B-vent or Type B vent
- Common uses include warm air furnaces, tank water heaters, residential boilers, and other common-vented appliances
- For use on gas-fired Category I natural draft appliances
Dimensions
| Product Depth (in.) | 3.475 in |
| Product Height (in.) | 27.6 in |
| Product Width (in.) | 3.475 in |
Details
| Finish Family | Silver Metallic |
| Material | Aluminum/Galvanized Steel |
| Pack Size | 1 |
| Returnable | 30-Day |


