We are always upgrading our products by investing in new laboratory tests. As demand for lower Uw values doors got bigger and government are releasing tougher laws for Building energy efficiency, such laboratory test seemed like a must for successful continuation in steel doors business. We have tested our steel doors to get higher Thermal value (Uw value).  Used test method was LST EN ISO 12567-1:2010/AC:2011
Our single doors and double doors have Thermal  Transmittance of 1.6 W/m²xK By changing some details in our doors - Our single doors can have Thermal  Transmittance of 1.3 W/m²xK. To achieve this value steel door price will increase.