Wrought Iron Hanging How Do You Hang An Outside Window Box That Hangs Inside On The Windowsill And Not Lose The AC? (Wrought Iron)?

How do you hang an outside window box that hangs inside on the windowsill and not lose the AC? (Wrought iron)? - wrought iron hanging

My girlfriend's herb garden in containers, hanging from iron hooks that slide over the edge of the window so that the plants are plants from the window. I must be able to close the windows for several reasons. (we live in Florida and is hot and not near Windos / lock-boxes there. Can anyone help? boxes are the width of the windows, wrought iron, and liner to prevent the coconut plant.