Hello, the design of the store has a considerable relationship with the drainage. We should do every part and every link with our heart. Your store is only 15 square meters, belonging to a mini-store. It is recommended to open the door with a small width1.3m.. The door is fixed in width of 80 and 50, made of glass and 2.5 meters long as a glass window. Match the model with the right props. I wish you a prosperous business!