A glass panel unit comprising: a first glass panel; a second glass panel arranged to face the first glass panel; a sealing portion in a frame shape, the sealing portion being configured to hermetically bond together respective peripheral portions of the first glass panel and the second glass panel so as to create an inner space which is hermetically sealed at a reduced pressure between the first glass panel and the second glass panel; and a getter configured to adsorb a gas and arranged in the inner space, the getter being arranged in a frame region, extending along the sealing portion, of the inner space so as to be covered with a building component frame when the building component frame is attached onto the glass panel unit, the frame region being located within a predetermined distance from each peripheral edge of the glass panel unit, the frame region comprises: a first sub-region forming one part, located on one side in a predetermined direction, of the frame region; and a second sub-region forming the other part, located on the other side in the predetermined direction, of the frame region, and the getter is arranged in the first sub-region, characterised in that; the getter includes a linear portion extending along one side of the glass panel unit, another linear portion extending along another side adjacent to the one side of the glass panel unit, and still another linear portion extending along still another side adjacent to the one side of the glass panel unit. a first glass panel; a second glass panel arranged to face the first glass panel; a sealing portion in a frame shape, the sealing portion being configured to hermetically bond together respective peripheral portions of the first glass panel and the second glass panel so as to create an inner space which is hermetically sealed at a reduced pressure between the first glass panel and the second glass panel; and a getter configured to adsorb a gas and arranged in the inner space, the getter being arranged in a frame region, extending along the sealing portion, of the inner space so as to be covered with a building component frame when the building component frame is attached onto the glass panel unit, the frame region being located within a predetermined distance from each peripheral edge of the glass panel unit, the frame region comprises: a first sub-region forming one part, located on one side in a predetermined direction, of the frame region; and a second sub-region forming the other part, located on the other side in the predetermined direction, of the frame region, and the getter is arranged in the first sub-region, characterised in that; the getter includes a linear portion extending along one side of the glass panel unit, another linear portion extending along another side adjacent to the one side of the glass panel unit, and still another linear portion extending along still another side adjacent to the one side of the glass panel unit. a first sub-region forming one part, located on one side in a predetermined direction, of the frame region; and a second sub-region forming the other part, located on the other side in the predetermined direction, of the frame region, and the getter is arranged in the first sub-region, characterised in that; the getter includes a linear portion extending along one side of the glass panel unit, another linear portion extending along another side adjacent to the one side of the glass panel unit, and still another linear portion extending along still another side adjacent to the one side of the glass panel unit.