The LB Fans Sabre Sickle Fan Assisted Roof Cowl (model VSR31534A) is a high-performance commercial ventilation solution. This 315mm, three-phase, 4‑pole unit features a swept impeller with aerofoil blades, winglets, and a serrated trailing edge, designed to optimise airflow and minimise turbulence. The one-shot die cast aluminium impeller is dynamically balanced for smooth and 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 can be added for enhanced functionality. All models are speed controllable and include thermal overload protection for motor safety. Operating up to 70°C and backed by a 2‑year guarantee, the VSR31534A delivers reliable and efficient roof ventilation.