PROBLEM TO BE SOLVED: To provide a grid in which breakage of a grid part can be reduced, a method of manufacturing the grid, a grid unit in which a plurality of such grids are used, and a method of manufacturing the grid unit.SOLUTION: A grid 1a includes a grid area 11a where a plurality of members with same shapes are provided cyclically, and a connection margin area 12a which is provided on the outer side of the grid area 11a and serves as a connection margin for connection with another grid 1a. Since the grids 1a in such a configuration can be connected using the connection margin area 12a when a grid unit DGa is configured by connecting the plurality of grids 1a, the breakage of the grid part in the grid area 11a can be reduced.
