DIN EN 13141-4:2022
建筑物通风 住宅通风部件/产品的性能测试 第4部分:单向通风装置的空气动力学、电力和声学性能
Ventilation for buildings - Performance testing of components/products for residential ventilation - Part 4: Aerodynamic, electrical power and acoustic performance of unidirectional ventilation units