The LB Fans Sabre Sickle Fan Assisted Roof Cowl (model VSR40034A) is a high-efficiency solution for commercial ventilation. This 400mm, three-phase, 4‑pole unit features a swept impeller with aerofoil blades, winglets, and a serrated trailing edge to optimise airflow and minimise turbulence. The one-shot die cast aluminium impeller is dynamically balanced for smooth, quiet operation.
The cowl is fully assembled and moulded from UV-resistant recyclable polymeric material, with optional coloured units available. Optional backdraught shutters and birdguards provide extra protection and functionality. All models are speed controllable and include thermal overload protection for motor safety. Capable of operating up to 70°C and backed by a 2‑year guarantee, the VSR40034A ensures reliable and effective roof ventilation.