I took HaktosTheUnscarred's deckbox (https://www.thingiverse.com/thing:6361084) and broke it down for easier printing / assembly.
You will need to print 2 x Sign_Side.stl file and attach them along with the back sign after assembling the box.
Bottom.stl | 118.3KB | |
Sign_Back.stl | 70.1KB | |
Sign_Side.stl | 70.9KB | |
Top.stl | 98.3KB |