A panel element (1; 1'; 1A, 1B, 1C; 201A, 201B, 201C, 201D, 201E, 201F; 301A, 301B; 401A, 401B, 401C, 401D; 601A, 601B) for a furniture construction system, which is bounded by four connection edges (101, 102, 103, 104; 101', 102', 103', 104'), which lie in a connection edges plane (E 1); wherein a connection surface (111, 112, 113, 114; 111', 112', 113', 114') adjoins each of the connection edges (101, 102, 103, 104; 101', 102', 103', 104'), the connection surfaces each respectively extending in a connection surfaces plane (E 2, E 3, E 4, E 5; E 2 ', E 3 ', E 4 ', E 5 '); wherein the respective connection surfaces plane (E 2, E 3, E 4, E 5; E 2 ', E 3 ', E 4 ', E 5 ') is inclined to the connection edges plane (E 1) by a bevel angle (α), which is greater than 0° and smaller than 90°; wherein the panel elements (1; 1'; 1A, 1B, 1C; 201A, 201B, 201C, 201D, 201E, 201F; 301A, 301B; 401A, 401B, 401C, 401D; 601A, 601B) are provided in the region of each connection surface (111, 112, 113, 114; 111', 112', 113', 114') with at least one cut-out (130, 131, 132, 133, 134, 135, 136, 137; 130', 131', 132', 134', 135', 137'; 132B, 137A; 230, 231, 232, 233, 234, 235; 332, 337; 432, 433, 435, 437; 632, 634) for receiving a limb (20, 22; 220, 222, 224, 226; 320', 320"; 420, 422, 424; 620, 622) of a panel connector (2; 2A, 2B, 2C; 202; 320; 402; 602), characterised in that the respective connection surface (111, 112, 113, 114; 111', 112', 113', 114') either has precisely one cut-out (132', 137'), which is formed at an outer side or at an inner side of the panel element (1'; 1A, 1B, 1C; 201A, 201B, 201C, 201D, 201E, 201F; 301A, 301B; 401A, 401B, 401C, 401D; 601A, 601B) spaced from the lateral edge of the panel element (1'; 1A, 1B, 1C; 201A, 201B, 201C, 201D, 201E, 201F; 301A, 301B; 401A, 401B, 401C, 401D; 601A, 601B), or has two or more adjacent recesses (130, 131, 132, 133, 134, 135, 136, 137; 130', 131', 134', 135', 132B, 137A; 230, 231, 232, 233, 234, 235; 332, 337; 432, 433, 435, 437; 632, 634) located in the region of the connection surface (111, 112, 113, 114; 111', 113), wherein - the spacing (a) from the lateral edge of the panel element (1; 1'; 1A, 1B, 1C; 201A, 201B, 201C, 201D, 201E, 201F; 301A, 301B; 401A, 401B, 401C, 401D; 601A, 601B) to the nearest cut-out corresponds to half of the spacing (b) between the recess nearest to the lateral edge and the recess next to this and - the spacing (b) between two adjacent recesses corresponds to twice the spacing (a) from the lateral edge of the panel element (1; 1'; 1A, 1B, 1C; 201A, 201B, 201C, 201D, 201E, 201F; 301A, 301B; 401A, 401B, 401C, 401D; 601A, 601B) to the nearest cut-out. - the spacing (a) from the lateral edge of the panel element (1; 1'; 1A, 1B, 1C; 201A, 201B, 201C, 201D, 201E, 201F; 301A, 301B; 401A, 401B, 401C, 401D; 601A, 601B) to the nearest cut-out corresponds to half of the spacing (b) between the recess nearest to the lateral edge and the recess next to this and - the spacing (b) between two adjacent recesses corresponds to twice the spacing (a) from the lateral edge of the panel element (1; 1'; 1A, 1B, 1C; 201A, 201B, 201C, 201D, 201E, 201F; 301A, 301B; 401A, 401B, 401C, 401D; 601A, 601B) to the nearest cut-out.