Mullex | Spare partsSpare part search How can I find the Article number? Where can I find the article number? The article number of the spare part is embossed in the plastic. INFO: Not every Müllex spare part has an article number. In this case, please use the spare parts search by category. Spare parts search by categoryChoose your category! PULL-OUT MECHANISM SWING DOORS FREE-STANDING Your Müllex benefits