Easy to use Snap Posta Poster Frames are suitable for any wall type. Aluminium edges snaps back to quickly insert and change poster and sign contents as needed. Great for fast moving retail, hospitality and advertising boards. Window Mounted version includes 3mm clear acrylic backing, polyester protector cover sheet, clip adapters & suction cups which allows it to be stuck to a glass window. Available in standard A4, A3, A2, A1, A0 and custom sizes. Includes: polyester protector sheet Pet G Replacement Sheet Posta Frame Corner and Top Cap