EU Trademark Classification EU19 Building materials Ventilator flaps (Non-metallic -) for buildings Class 19 Ventilator flaps (Non-metallic -) for buildings 40875 建筑物用非金属通风翻板 Chinese 建筑物用非金属通风翻板 English Ventilator flaps (Non-metallic -) for buildings Site ref. 40875 Class 19 Included in Harmonised Database (HDB)