Flexible sizing options, allowing designs of up to 7.5 m² for flat roof applicationsSuitable for daily ventilation (full ventilation in the 90° ventilation position)Quality is assured through endurance open–close cycle tests, with 10,000 cycles for ventilation and 1,000 cycles for smoke exhaust operationFeatures high aerodynamic efficiency and low U-values thanks to its high-quality construction; does not create a greenhouse effect within the indoor space