I designed and printed a pair of these consoles to support a PDU for my daughter's desktop instruments. Used the catenary function to form the curve. This makes it strong enough to bear more weight. Some circular/elliptic holes were added in the lower part, it makes it even stronger. You may play with the parameters to fit the object to your needs. You will need OpenSCAD for this.

Print instructions

Printer brand: Prusa
Printer: i3 MK2S
Rafts: No
Supports: No
Resolution: 0.15mm
Infill: 20%
Filament_brand: any
Filament_material: PLA

Notes:
Prints well without support if placed flat (on the side), this direction is recommended for strength as well.