Abstract: According to the present invention, provided is a prefabricated booth comprising: a frame in which a plurality of horizontal frames and a plurality of vertical frames coupled to the plurality of horizontal frames are three-dimensionally coupled to each other so as to form a square-shaped frame structure; a plurality of connection pieces, each of which both sides are respectively coupled to the inner sides of the frames vertically intersecting to be adjacent to each other; first profiles respectively arranged at the outer sides of the upper and lower horizontal frames of the square frame structure; second profiles erectly arranged to correspond to the vertical frame at the corner side of the square frame structure; and a bracket comprising a center part fastened to each connection piece, a first extension part extended to one side of the center part and fixing the first profile, and a second extension part extended to the other side of the center part and fixing the second profile.

Abstract: An air filter for a fuel cell vehicle may include a first filtration layer formed in a two-layered dust holding structure, a gas adsorption layer formed of amorphous activated carbon, a second filtration layer having amorphous pores formed therein, and a cover layer for maintaining a physical form of the air filter.

Abstract: An air filter for a fuel cell vehicle may include a first filtration layer formed in a two-layered dust holding structure, a gas adsorption layer formed of amorphous activated carbon, a second filtration layer having amorphous pores formed therein, and a cover layer for maintaining a physical form of the air filter.