6822 configuration: 1. Front glass door, single mesh at the back, large front and rear locks. 2. Material thickness: 2.0 for columns, 1.2 for shelves, 1.0MM for others. 3. One shelf. 4. No PDU strip. 5. Four fans. 6. 1 pack of Habo screws. 7. Color: black. 6642 configuration: 1. Front glass door, single mesh at the back, large front and rear locks. 2. Material thickness: 2.0 for columns, 1.2 for shelves, 0.1.0 for others. 3. Two shelves. 4. No PDU strip. 5. Two fans. 6. 1 pack of Habo screws. 7. Color: black. 6842 configuration: 1. Front glass door, single mesh at the back, large front and rear locks. 2. Material thickness: 2.0mm for columns, 1.2mm for shelves, 0.1mm for others. 3. Two shelves. 4. No PDU. 5. Four fans. 6. 1 pack of Habo screws. 7. Color: black. 61042 configuration: 1. Front glass door, single mesh at the back, large front and rear locks. 2. Material thickness: 2.0mm for columns, 1.2mm for shelves, 0.1mm for others. 3. Two shelves. 4. No PDU strip. 5. Four fans. 6. 1 pack of Habo screws. 7. Color: black. 81242 configuration: 1. Front glass door, rear double mesh door, front and rear large locks. 2. Material thickness: 2.0mm for columns, 1.2mm for shelves, 0.1mm for others. 3. Two shelves. 4. No PDU. 5. Four fans. 6. 1 pack of Habo screws. 7. Color: black.