Liquid cartridge having chamber and set of the liquid cartridges

A set of liquid cartridges comprising:

• a plurality of liquid cartridges, each liquid cartridge comprising:
• a liquid chamber configured to store liquid;
• a liquid supply portion having a front end part formed with a liquid supply hole through which the liquid is configured to flow out from the liquid chamber in a frontward direction crossing a gravitational direction in an upright posture;
• a front wall and a rear wall away from the front wall in a rearward direction opposite to the frontward direction in the upright posture;
• a lower-side sub front wall at which the liquid supply portion is provided, the lower-side sub front wall facing frontward and being positioned closer to the front wall in the frontward direction than to the rear wall, the lower-side sub front wall being positioned downward relative to the front wall;
• a bottom wall extending between the lower-side sub front wall and the rear wall:
• a sub bottom wall extending between the front wall and the lower-side sub front wall in the frontward direction, the sub bottom wall positioned upward relative to the liquid supply portion;
• and
• a pair of side walls each connecting the front wall, the sub bottom wall, the lower-side sub front wall, and the bottom wall, each of the pair of side walls extending frontward, rearward, upward, and downward in the upright posture,
• the front wall being positioned frontward relative to a front end part of the liquid supply hole,
• the front wall having a length in an upward direction longer than a length of the lower-side sub front wall in the upward direction in the upright posture, the upward direction being opposite to the gravitational direction,
• wherein the liquid chamber includes a first space and a second space in communication with each other,
• the first space being defined by inner surfaces of the front wall, the sub bottom wall, and portions of the pair of side walls that extend from the front wall in the rearward direction to a position where the sub bottom wall is connected with the lower-side sub front wall,
• the second space being defined by inner surfaces of the lower-side sub front wall, the bottom wall, the rear wall, and portions of the pair of side walls that extend from the rear wall in the frontward direction to a position where the bottom wall is connected with the lower-side sub front wall,
• the second space being positioned rearward relative to the first space, and
• wherein the first space and the second space have dimensions in a left-right direction perpendicular to the frontward direction and the gravitational direction in the upright posture,
• the dimensions of the first space and the second space in the left-right direction being the same as a dimension of an inner surface of the front wall in the left-right direction,
• wherein an outer surface of the front wall has a dimension in the left-right direction, and
• wherein the dimension of the outer surface of the front wall in the left-right direction is the same as a distance between outer surfaces of the pair of side walls in the left-right direction,
• wherein the dimensions of the outer surfaces of the front walls in the plurality of liquid cartridges in the left-right direction are the same as one another, and
• wherein distances between the front walls and the liquid supply holes in the plurality of liquid cartridges in the frontward direction are different from one another.