Certification has been achieved in EN 1366-2 standards in fire dampers. TSE-EN 1366-2 standard describes how to test fire dampers.The standard describes the dimensions of the test furnace, the furnace pressure, details of the connection and exhaust ducts, how to assemble the test sample, how and where the necessary measurements will be made. In summary, test equipment, test conditions, test process and how to write the test report are described together with the related drawings. Standards and regulations are tools to ensure that manufacturing, tests, system design, installation, commissioning and operation are carried out within certain criteria. Establishing standards in a subject enables controllability of that subject. Since “subjective scales” will be decisive in areas where there are no standards, it is possible to find that the products that are said to address the same purpose do not show the slightest similarity with each other. All tests are carried out by independent and accredited laboratories and related reports are also written by these institutions. The last leg of these tests and reports is the individual labeling of each damper produced. As a result of laboratory tests, the fire damper proves what performance criteria it typically meets. However, labeling each individual damper “individually” obliges the damper manufacturer to fulfill other responsibilities. The manufacturer of the damper is obliged to prove that each damper that comes out of the belt has the same properties as the dampers tested in the laboratory, and that the production is made in the same standard and quality. For this, production area and conditions are started to be checked periodically. In addition to the performance tests described above, these checks are carried out by a number of independent organizations authorized by CEN.