The invention relates to a clamp for seven longitudinal profiles (1, 2, 3, 4, 5, 6, 7) arranged next to one another and oriented in a longitudinal direction (L), said clamp having one clamping jaw (11) and another clamping jaw (12) which are movable towards one another and away from one another, with a receiving area (13) in the one clamping jaw (11), which receiving area has a bearing face (13c) at the bottom for two of the seven longitudinal profiles (2, 3), said bearing face being movable at least in some regions relative to the clamping jaw (11) transversely to the longitudinal direction (L), and with another receiving area (14) provided in the other clamping jaw (12) for the bearing of four others of the seven longitudinal profiles (1, 4, 5, 6).