Certificates of approval

Certificates of approval on request.

According to the general requirements of the German Centre of Competence for Construction, whenever the ER AP/APB units are used, the certificate of approval or a copy of this must be present at the point of use for the

• ER-APB: Z-51.1-45 or
• ER-AP: Z-51.1-42

-> See “General building approval for ventilation units for single air extraction systems with shared exhaust air duct according to DIN 18017-3”.