Shelf support
thingiverse
The length after the model name means the board width for the shelf, i.e. ShelfSupport_180mm would be 170mm wide and meant for a shelf of 180mm (10mm offset)
Download Model from thingiverse
With this file you will be able to print Shelf support with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Shelf support.