Certifications Certificate according to DIN EN ISO 9001:2008 Certificate according to Eurovent (Airbox F40) Certificate according to Eurovent (Airbox T60) Certificate according to DIN 1946 , part 4 (Airbox S40) Certificate according to VDI 6022 (Airbox S40) Certificate of hygiene compliance (Airbox S60 and T60) Test certificate of energy efficiency label Test certificate of fan test chamber (DIN 5801) Test certificate "Fans for AHU´s" according to RLT-Directive 01 Production Quality Assessment Notifications (ATEX 100) Certificate according to DIN EN 15085-2