Want to make your brochures light up? Try using this LED lighted brochure rack. There are 4 tiered racks and the widest space at the bottom measures 140mm (brochures should be at least this wide). Easy. Print one of each file, I used 20% infill w/ 2 perimeters. The BatteryHolder file will require support material. Run 2 wires through the tunnels on both verticalStand files. Solder LED to the front and leave 3-4" extra wire in the back. When using a 9V battery, create a series circuit with both LED's and a 180 Ohm resistor to drop the rest of the voltage in the circuit. Other batteries might require a different resistor value depending on the supply voltage. The LED lights press easily back into the hole. Plug in and enjoy having your brochures in the spotlight!!! PS. With a 9V battery, the lights have already stayed on for over 3 days!