Why this ducting earns its place
Extraction systems work best when air flows smoothly upward and outward. Sharp corners create turbulence and pressure loss, so a 45-degree elbow is your answer when the route demands a gentler turn. For 400 mm ducting, this angle is the middle ground: less aggressive than a 90-degree corner, but still practical enough to navigate real kitchen constraints.
At 1 kg, the elbow adds almost no weight to your ducting run. Push-fit connections mean you slip the 400 mm ducts onto both ends and seal with foil tape — quick, no tools, no leaks. The 45-degree angle is engineered for smooth airflow, so you're not fighting resistance and pressure drop the way you would with a hard corner.
Building an extraction route is a balancing act. The cooking zone sits lowest, and the system has to climb steadily toward the exit (roof, wall, or external hood). A 45-degree elbow lets you change direction without creating low spots where condensation can collect or kinks that choke airflow. It's a standard choice in commercial kitchens where every bit of extraction efficiency matters.
