1. Conventional module: 2.4-meter split 2. Customizable size: average addition and subtraction 3. Seat bag height: 45cm 4. Sofa foot height: 14cm hardware foot 5. Sofa total height: 79cm Rules for changing the ruler: 1: Considering overall coordination, it is recommended to customize a size of 20cm or larger and add units without handrails 2: Beyond 2.8 meters, it is recommended to add units without handrails