Secure, waterproof and vandal resistant these frames are suitable for both internal and external use. Available in eleven stock sizes and seventeen finishes. This 55mm wide extruded aluminium magnetic frame can be displayed portrait or landscape. Door stays supplied as standard with all frames, allowing for easy poster changes. This is our highest specification poster system and our most popular external magnetic poster frame. The back panel is magnetic steel suitable for a range of media types. Graphic size: 594mm x 420mm. Visible size: 594mm x 420mm.