Also *sanmon 三門. The most famous example is the very large 21.05 m x 9.72 m gate at Zōjōji 増上寺 (1622) in Tokyo. Sangedatsumon refers to actual gates, but the word also refers to three spiritual gates one must pass through to attain enlightenment: 1 kūgedatsumon 空解脱門 shortened to kūmon 空門; 2 musō gedatsumon 無相解脱門 abbreviated to musōmon 無相門; and 3 mugan gedatsumon 無願解脱門 or musamon 無作門. The gate at Zōjōji, is a 2-storied gate nijūmon 二重門, 5 x 3 bays, with three entrances. Fences *hei 塀, about the length of 2-bays, are attached to each side of the gate and have board roofing *itabuki yane 板葺屋根. They are connected to single-storied buildings called *sanrō 山廊 that contain the stairways leading to the second floor of the gate. They are about 3 x 2 bays. The longer sides run in the direction of the purlin *keta 桁. They have gabled roofs *kirizuma yane 切妻屋根, and are covered with tile *hongawarabuki 本瓦葺. Undecorated wood is used in the second story. The pillars *hashira 柱, are placed inside and secured by penetrating tie beams *nuki 貫, on top of which 3-on-1 brackets complexes *mitesaki tokyō 三手先斗きょう, are used to support the ceiling joists *tenjōketa 天井桁. The central part of the interior space has big, sturdy, rainbow beams *kōryō 虹梁, that run transversely. The whole structure is very strong. Shakyamuni *Shaka 釈迦, and three statues are enshrined in the central altar. The sixteen arhats *jūroku rakan 十六羅漢 are set on pedestals next to the three statues. The Zen style *zenshūyō 禅宗様 is evident in the use of closely packed 3-on-1 bracket complexes, fan rafters *ōgidaruki 扇垂木, and rainbow beams with bottle struts *taiheizuka 大瓶束, in the gable pediments *tsuma 妻. The gate entrance is placed in the second row of pillars in from the front of the gate. Examples: Tōfukuji Sanmon 東福寺三門 (1428) and Daitokuji Sanmon 大徳寺三門 (1582), both in Kyoto.