The Kamachi and crosspiece of the upper side and under side are made in the same width and put in the way of Jigoku-kumiko (vertical crosspiece and horizontal crosspiece are put alternately), and the front side and the lateral side of crosspiece are made in almost the same size.
上下の框と桟も同じような幅でできており、縦桟と横桟を交互に編み付ける地獄組子となっており、また桟の見付けと見込みもほぼ同じ寸法でできている。