The toilet water inlet is about 20 cm from the ground, and the vertical distance of the internal sewage outlet is about 30 cm. The center of the upper elbow is about 25 cm from the ground.
The water angle valve should be reserved on the right side of the toilet, about 40 cm away from the center of the toilet. The length of the toilet water inlet pipe is the length from the toilet water inlet to the outlet of the eight-character valve on the wall, and the common size is 30 to 60 cm.