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隔音
一级隔声减噪设计标准
厚实的铜质门板配以内里6级安全联防层,隔声减噪设计标准等级为一级,有效隔绝大部分噪音,大程度过滤门外噪音,享受安静。
一级:很安静(瑞茂铜门经国家建筑材料测试中心检验结果:空气声隔声性能结果为36db,达到一级隔声减噪设计标准)