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Beat the heat and slash bills with Twista roof ventilators. Wind-driven, zero-power, zero-running-cost extraction keeps your roof cavity cool and dry. Aussie‑designed for whisper‑quiet durability with premium ball bearings guaranteeing up to 30 years’ service. A single unit vents 90 m²; simply add more units for larger roofs. Prevent mould, rot and insulation decay while easing air‑con loads. Industry-leading warranties and leak-proof installation ensure maintenance-free peace of mind. Experience natural ventilation—visit https://twista.com.au.