The basic type seems to have been composed of Korai-mon Gate as a front gate and Yagura-mon Gate as a rear gate, but some Masugatamon gates had only a rear gate without a front gate and others had only a front gate.
最前の門を高麗門、その後方の門を櫓門としたものが基本的な形状であると見られているが、後方の門のみで最前の門がないものや、最前の門のみのものもある。