I have standard cupboards.  You can't hang it on the outside without screws because it's not wide enough.  You can't hang it under with screws because the screws are too long& will go through the wood.  I put  it inside the cupboard and it's perfect,  but I was lucky enough to have the extra space.  You can't really put anything else in the cupboard.  It did achieve the goal of eliminating counter clutter!