This is a simple spice rack meant to screw into the inside of a kitchen cupboard.
You'll need 4x13mm (or slightly larger) mounting screws for mounting. When printing, note that you'll need to reduce the fan speed on the crossbars by 50% to prevent curling; the provided profile already does this. Print in tough PLA; PETG isn't stiff enough.
For modifications, use https://cad.onshape.com/documents/13c95ca3e8fceb55aa539df9/w/dff11cd85dea3cc66ba1f0eb/e/6db77b4d4793c71ab7b84710