1, the measurement should be from one edge line of the sofa sitting surface to the other.

2. During measurement, four dimensions should be measured, namely, total length of C, total width of D, narrow width of F and narrow length of E. This step should be accurate.

3, backrest measurement is to pay attention to measuring the plane width of the backrest, height should be measured in the front height and thickness, to avoid slipping caused by too short.

4. When measuring the pillow or waist pillow, pay attention to take out the pillow core and measure it from the edge of the pillow core to the other side.

5. To measure the length j of the armrest, please refer to the dimension measurement of the width b of the sofa seat.