Nailing boards

[Lupe]

Dear Kreggers,
I need a little guidance. I put some artwork on some .5x 3.5 boards. I want to mount them over the windows as a decoration.
I was wondering if you could tell me how I can best achieve this. They are stucco walls. I am not sure what kind of nails or screws to use to put the boards up.
I have drills and drivers, I just don't know how long the nails or screws should so I don't run them to the other side of the walls.

I would really appreciate your assistance.

Lu

[Ken Darga]

One method that'll work, is to make "keyhole" slots on the back side of the boards,

using a "keyhole router bit"

Install screws into the wall and hang up the boards.

  

[Lupe]

Dear Ken,

Thank you for your response. Unfortunately, I have no router. I wouldn't know how to begin to use one. Do you happen to have a plan B? Thank you.

[Ken Darga]

Plan "B"

Install hollow wall anchors.

Install picture hooks on the back side of the board.

Hang 'em up.

The wall anchors are available at Home Centers.