The number of companies varies according to actual needs. For example, if it is a training company, the number of students in the classroom (class * *) can be larger, and the door is half as wide as the door. If it's just the store manager's office, the length can be 30-40 cm, and the width is about 12- 18 cm. You can adjust yourself according to your feelings. You can make a piece of paper about the same size, put it by the door to see if it fits, and then click it. The same is true of listing. The best way is to make a piece of paper and see how it feels with the scene, and finally decide the size.