Bi-Office Ultrabrite Cork Noticeboard Display Case Lockable Yellow Aluminium Frame 12 x A4 - VT6601611511 DDBi Office Ultrabrite lockable display cases have a highly visible aluminium yellow frame, ideal for an industrial environment to display and highlight important information or safety instructions, as well as keep the documents saved from dust or water splashes. The cork surface means that you can attach your notices with a simple push pin and when you remove it, its as good as new. It's lockable, strong, and lightweight solution with natural cork