The Quality Control Association for Internal Doors made from Wood and Wood-based Panels publishes the hereinafter mentioned Rules for Quality Control and Testing, which can be used by the door manufacturers in order to organize independent Quality Control Procedures. These are monitored by the Quality Control Association with the help of independent Quality Control Inspectors.

In 2014 the new quality control guideline RAL GZ 426 was published.


For more information, please consult