Avery Dennison 12-Mil White Matte Window Film12 Mil White Matte window film is ideal for enhancing the functionality and appearance of glass whether to provide privacy, delineate space, disguise unattractive features, or provide graphic impact. The 12 mil safety version is designed to protect people and property from flying shards of glass. All matte translucent films are suitable for installation on clear or tinted single and double pane glazing. Rolls are 65 feet in length.