Brussels, 14 December 2017. The Eurovent Association has officially released the first edition of its long-awaited code of good practice Eurovent 4/23 (2017) on the “Selection of EN ISO 16890 rated air filter classes for general ventilation applications”. The publication is addressed to all HVAC professionals dealing with ventilation systems, particularly design consultants, facility managers and manufacturers of equipment incorporating air filters. It was jointly developed by participants of the Product Group ‘Air Filters’ (PG-FIL).