The test for burglar retardant door sets according to the German standard DIN ENV 1627 consist of 3 parts :
PTE Rosenheim GmbH
Institut für Holztechnologie Dresden GmbH
Mobile test facilities are available in some institutes, too.
The burglar retardant quality is mainly achieved by the constructive frame elements.
Elements of special importance :
Full-size cores of tubular or solid SAUERLAND board meet the requirements of the classes ET1 and ET2.