---- How to measure door sizeChoose three points for horizontal or vertical measurement , the error should not exceed 1cm. If its exceeds, re-measurement is required. Choose three points for horizontal measurement, the minimum of the measured value is the width of the door. Choose three points for vertical measurement, the minimum of the measured value is the height of the door. Choose three points for horizontal measurement, the maximum value of the measured value is the thickness of the door frame. ---- About Special walls ( If your project has the following walls, please let us know.) Attention!!! 1. When measuring , please pay attention to whether the walls need to be decorated with tiles, such as kitchens, balconies, bathroom,etc. If you need to decorate the walls, please reserve enough size. 2. During the measurement , please feel free to consult us if you encounter any problems.