The BSEN 1279 product certification for insulating glass units is the ultimate endorsement for our products. By considering performance (through testing) and production (through quality management), we are able to demonstrate to specifiers and purchasers that our products not only meet the test requirements, but that they also meet the same high standards. In this way, we offer confidence to the end-user that the installed window will meet these exacting standards. To achieve and maintain this standard, we have to submit products to an Exova/BM Trada UKAS accredited test laboratory (Chiltern Dynamics) who carry out stringent tests to ensure that the product meets or exceeds the required standard.