STACK CASE

A stack case houses a plurality of fuel cells in a stacked state, and includes a case main body, a lid, and a seal. The stack case is configured to be disposed in a vehicle such that a stacking direction is inclined downward with respect to a horizontal direction as a distance to the discharge pipe decreases and an upper surface of the case main body is inclined upward with respect to the horizontal direction as a distance to the discharge pipe decreases.