Permitted exhaust air systems
The ER EC/ER EC 2.1 single air extraction system can be used in combination with a ceiling barrier system inside and outside the shaft.
Use in an air extraction system is permissible without protection requirements.
The ER EC/ER EC 2.1 single air extraction system can be used in combination with a ceiling barrier system inside and outside the shaft.
Use in an air extraction system is permissible without protection requirements.