In order to hide the nail head on the surface of the door, the lacquered wooden decoration of manju-gata (style of bun with bean-jam filling) are attached and the kondo-hasso kanagu (literally, "gilt-bronzed twin eights metalwork") (a kind of fixing bracket for decoration and reinforcement) are attached in order to prevent deformation of the door as a whole.
扉の表面に出た釘頭を隠す為に、饅頭型の木製漆塗りの飾りを付け、扉全体の変形を防止するため金銅八双金具（装飾と補強を兼ねた建築金具の一種）を、取り付けている。