ISO 10077-2:2003规定了一种方法，并给出了计算框架型材的热透射率及其与嵌装玻璃或不透明面板连接处的线性热透射率的参考输入数据。 该方法还可用于评估百叶窗型材的热阻和卷帘箱的热特性。 ISO 10077-2:2003也给出了用于计算的数值方法的验证标准。ISO 10077-2:2003不包括太阳辐射、空气泄漏引起的热传递或三维热传递的影响，如针点金属连接。框架和建筑结构之间的热桥效应不包括在内。

ISO 10077-2:2003 specifies a method and gives reference input data for the calculation of the thermal transmittance of frame profiles and of the linear thermal transmittance of their junction with glazings or opaque panels. The method can also be used to evaluate the thermal resistance of shutter profiles and the thermal characteristics of roller shutter boxes. ISO 10077-2:2003 also gives criteria for the validation of numerical methods used for the calculation. ISO 10077-2:2003 does not include effects of solar radiation, heat transfer caused by air leakage or three-dimensional heat transfer such as pin point metallic connections. Thermal bridge effects between the frame and the building structure are not included.