Series 3220 and 3230 are constructed of 2 mil cast vinyl film with clear, permanent pressure sensitive adhesive. Designed to protect and prolong the life of printed images, Series 3220 and 3230 extend the life of the graphics by 2 years. Series 3220 and 3230 are rated for outdoor durability up to 7 years. This product is not designed to be used as an optically clear window film.