SCREECH OWL NESTBOX

Although I have never seen a Screech Owl in the wild it would be a win-win situation to build a nest box for them to nest in.

I had enough one inch thick cypress pieces to build a Screech Owl Nest box using plans found on the net. Now that it is built where is the optimum place to locate it?

Is there a preferred tree to place the box?
Should the nest box face north, south, east or west or does it matter?
How high should it be placed in the tree?

We have never seen nor heard Screech Owls in our area but hopefully one will locate the nest box and add to the population.

Much appreciated,
Tom