Advanced Flue Protection & Draught Control
The 6" Twin Wall Anti-Downdraught Cowl is designed to prevent wind-related downdraughts and improve flue performance in all weather conditions. Suitable for solid fuel, wood, gas, and oil appliances, it ensures a safe and consistent chimney draught while protecting against rain and debris entry.
Durable Stainless Steel Construction
Manufactured with a 316L stainless steel inner wall and a 304 stainless steel outer wall, this cowl offers outstanding resistance to heat, corrosion, and environmental damage. The 25mm mineral insulation between the twin walls ensures optimal heat retention and safety throughout operation.
High-Temperature & Weather-Resistant Design
Tested for continuous operation up to 600°C, this cowl provides excellent draught stability and prevents smoke blowback caused by wind turbulence. Ideal for twin wall flue systems with a natural draught exhaust, it enhances performance, efficiency, and safety across residential and commercial installations.
Description
The 6" Twin Wall Anti-Downdraught Cowl is an essential flue termination component engineered to eliminate wind-induced downdraughts and maintain steady airflow within the chimney. Its aerodynamic design deflects wind, helping to sustain consistent draught pressure and prevent smoke re-entry into the appliance. Constructed from 316L stainless steel internally and 304 stainless steel externally, and featuring 25mm mineral insulation, it combines strength, efficiency, and weather resistance. With a working temperature of up to 600°C, this cowl is perfect for high-performance heating systems using wood, coal, gas, or oil fuels.
Technical Data
| Feature | Specification |
|---|---|
| Product Type | Twin Wall Anti-Downdraught Cowl |
| Diameter | 6" (150mm) |
| Material | Stainless Steel (Double Wall) |
| Inner Material | 316L Stainless Steel |
| Outer Material | 304 Stainless Steel |
| Insulation | Mineral Wool, 25 mm Thick |
| Working Temperature | ≤ 600 °C |
| Function | Prevents Downdraught & Weather Ingress; Stabilizes Flue Draught |
| Application | Twin Wall Flue Pipe for Solid Fuel Systems |
| System Type | Natural Draught Exhaust from Heating Appliances |
| Compatibility | All 6" Twin Wall Flue Systems |
| Heat Resistance | High Temperature Rated |
| Finish | Stainless Steel |
| Installation | Fits Securely to Twin Wall Flue Termination |
| Distance from Combustible Materials | 50 mm |
| Use | Residential & Commercial Chimney Systems |
| Colour | Silver |
| EAN | — |
