I designed this lamp to hang it around my garden with some led lights, it prints really easily and needs no supports.
The approximate dimensions are 30H X 22W X 22D (in cm)
The file is optimized to be printed with a 0.8 nozzle with 2 shells/walls and almost no infill.
I've also printed it with a 0.4 mm nozzle at 50% size and it printed great.
It can be printed with 0% infill because it is only needed for the top that has no pattern, but I suggest using at least a bit of infill to make it sturdier.