5/18/2015 updated so the screw tabs/ziptie clips are at the ends for tight fits. second version. lid still fits this version. Box for LM-2596 adjustable dc voltage regulator. There is an opening in each end for the input and output wires. The lid is designed to snap on tightly. Printed with 2 shells and 35 percent infill. Depending on your print setting you may have to adjust print settings or even sand the inner lid edges of your box lid to make it fit. Designed for lm2596 voltage regulators commonly found on ebay and amazon. This box fits boards that measure 48mm x 23mm with wires soldered on each end and a variable resistor to set the output voltage.(shown in photos) It may need to be modified or resized for other boards. A remix of a case for a larger regulator. The original can be found here: http://www.thingiverse.com/thing:547827