This is a professionally printed window cling decal that will allow you to park in the secure areas of Gizmonics Institute, Deep 13 Level.. This decal measures approx. 4" x 4". How to apply Cling decals. This decal will adhere to any clean and dry surface. Images are reversed-printed. Peel the paper backing and apply to the inside of your window. Do not block your view. Decals are best applied in temperatures of 65 degrees and over. Decals can be removed and re-applied.