This is a multi version spice shelf. You have 3 options how to use the models to create your spice shelf. Option one: just print the model named Simple_Spice_Shelf.STL. When you do so you can drill to holes into the wall you want to attach the shelf and just snip it on with the two holes at the back. Option two: Print the following models with correct amount 3xSimple_Spice_Shelf.STL 2xSimple_Spice_Shelf_Support.STL 4xSimple_Spice_Shelf_Support2.STL Put it together like in the assembly with name Simple_Spice_Shelf_Asm.STL. This gives you a free standing shelf Option three: Print the following models with correct amount 3xSimple_Spice_Shelf.STL 2xSimple_Spice_Shelf_Hang_Support.STL 4xSimple_Spice_Shelf_Support2.STL Put it together like in the assembly with name Simple_Spice_Shelf2.STL. This gives you a shelf that can be put on the wall using two screws on top where the holes are located.use the counter sunk holes at the back of the supports to hold the front supports in place.