Assistive products for environmental improvementDevices for protecting a person from adverse environmental influences by eliminating or controlling unfavourable factors.
27 03 03
Devices for regulating the internal climatic features of a confined space (temperature, humidity, ventilation). Included are, e.g. humidifiers.
27 03 06
Devices that remove pollutants from the air in the internal atmosphere.
27 03 09
Devices or materials that reduce or absorb noise.