A set of panels for an assembled furniture product, wherein the set of panels is provided with one or more locking devices, each locking device comprises: an edge section of a panel which is configured to be arranged in an edge section groove of an adjacent panel for locking the panel and the adjacent panel together in a first direction, a flexible tongue arranged in an insertion groove in the edge section groove at an edge of the adjacent panel, said flexible tongue cooperates with a tongue groove at the edge section at an adjacent edge of the panel, for locking the panel and the adjacent panel together in a second direction, which is essentially perpendicular to the first direction, wherein the flexible tongue is, during assembling of the panel and the adjacent panel, configured to be pushed into the insertion groove when the edge section is inserted into the edge section groove, wherein the panel and the adjacent panel are panels of the set of panels that are configured to be connected perpendicular to each other, i.e. with a main surface of the panel perpendicular to a main surface of the adjacent panel, wherein the flexible tongue is configured to spring back and into the tongue groove when the panel and the adjacent panel have reached a connected state, wherein the locking device is configured such that the edge and the adjacent edge may be connected by hand, and wherein the set of panels comprises at least four frame panels (1, 2, 5, 6) that are configured to be connected together at adjacent edges by at least one of said locking devices to obtain a frame of a rectangular shape, characterised in that the set of panels comprises a fifth panel, such as a back or bottom panel, which is configured to be connected to a back or bottom edge of the frame by at least one of said locking devices. an edge section of a panel which is configured to be arranged in an edge section groove of an adjacent panel for locking the panel and the adjacent panel together in a first direction, a flexible tongue arranged in an insertion groove in the edge section groove at an edge of the adjacent panel, said flexible tongue cooperates with a tongue groove at the edge section at an adjacent edge of the panel, for locking the panel and the adjacent panel together in a second direction, which is essentially perpendicular to the first direction, wherein the flexible tongue is, during assembling of the panel and the adjacent panel, configured to be pushed into the insertion groove when the edge section is inserted into the edge section groove, wherein the panel and the adjacent panel are panels of the set of panels that are configured to be connected perpendicular to each other, i.e. with a main surface of the panel perpendicular to a main surface of the adjacent panel, wherein the flexible tongue is configured to spring back and into the tongue groove when the panel and the adjacent panel have reached a connected state, wherein the locking device is configured such that the edge and the adjacent edge may be connected by hand, and wherein the set of panels comprises at least four frame panels (1, 2, 5, 6) that are configured to be connected together at adjacent edges by at least one of said locking devices to obtain a frame of a rectangular shape, characterised in that the set of panels comprises a fifth panel, such as a back or bottom panel, which is configured to be connected to a back or bottom edge of the frame by at least one of said locking devices.