This thing contains a box to place the Arduino Mega + Ramps board: Scalar - EletronicBox.stl It also supports a 80mm PC fan to cool the whole electronics. Ramps1.4_Applatie.stl is the same box but it can be printed flat. You can print it as is using Scalar XL 3D printer.You will find the LCD front cover: Scalar - ElectronicBox_LCD.stl Also we give you a 80mm fan grid to place on top fore safety issues. 80mmFanGrid.stl And finally a small goodies that is the LCD knob if the one your received with your LCD 2004 doesn't fit properly. This package is compatible with the Scalar Family 3D Printers (Scalar M and Scalar XL) The 3D printers kits can be found here: http://3dmodularsystems.com Have a great printing experience! 3D Modular Systems Evolutive 3D Printers http://www.3dmodularsystems.com Twitter: https://twitter.com/3dmodularsystem Youtube: http://www.youtube.com/c/3DModularSystems3DPrinters