Kitchens, plant rooms and long duct runs punish tight bends and starved throats. The **high flow vent adaptor** frees the first centimetres of the route with a smooth, generous transition from the roof outlet into the duct, reducing turbulence where it matters most. A firm seating collar and sensible fixing points let crews secure and seal decisively, then move on knowing the joint won’t creep under vibration. In operation, the change is obvious: pressure drop softens, fans hit their numbers with less effort and the low‑frequency buzz that comes from strangled flow fades. Because the adaptor respects common duct diameters, sites can standardise stock and repeat a known approach across bays without inventing a new solution for each elevation. Inspectors like that the throat is accessible, and occupiers appreciate the blend of performance and quiet. If you’re chasing extraction rates without fighting the outlet, fit the **high flow vent adaptor** and make the route a help, not a hindrance. Used with the right fan curve, the **high flow vent adaptor** can be the simplest upgrade you make this year.