Panels comprising a mechanical locking device and an associated assembled article

A set of panels comprising a first panel and a second panel configured to assume a locked state in which a first main plane of the first panel is arranged essentially perpendicularly relative to a second main plane of the second panel, wherein the set comprises:

• a groove provided in the first panel;
• an edge section of the second panel;
• an insertion groove provided in the groove of the first panel, a separate tongue being arranged in the insertion groove;
• and
• a tongue groove provided in the edge section of the second panel,
• wherein the separate tongue is configured to cooperate with the tongue groove for locking the first and second panels to each other in a first direction perpendicular to the first main plane,
• wherein the edge section of the second panel is configured to cooperate with the groove of the first panel for locking the first and second panels to each other in a second direction parallel to the first main plane and extending towards a side edge surface of the first panel,
• wherein an edge strip is provided on the side edge surface of the first panel,
• wherein a bottom portion of the groove comprises an elevated portion arranged at least in an outer section of the groove along the second direction, an area of the elevated portion being at least 3% of an area of a rectangular bounded region extending along boundaries of the bottom portion,
• wherein the area of the elevated portion and the area of the bounded region are defined in a cross-sectional side view of the first panel, and
• wherein the bounded region is defined by:
• a first and a second plane being parallel to the first main plane, the first plane extending along an innermost portion of the groove and the second plane extending along a highest portion of the elevated portion along the first direction;
• and/or
• a third and a fourth plane extending along the first direction and along a third direction being perpendicular to the first and the second directions, the third and the fourth planes extending along a respective outermost wall portion of the bottom portion along the second direction.