Only works on glass
Not face mounted. Said another way — the white back is against glass.
Upside – very easy to apply, move apply again
Downside – easy to catch bubbles between the cling and glass
For short term application as static grip does fade over several months
For the same purpose, but without bubbles and more durability, try 6 mil repositionable.
Max printable image area is 53 inches in the short dimension.