These colour secure heavy duty lock frames are our highest specification colour lockable frames! Featuring a massive 55mm wide extruded aluminium frame that is available in 17 stock colours including 3 anodised, 12 powder coated and 3 wood grain finishes. They feature a heavy duty frame profile and lock/hinge system. Suitable for external use. A3 Graphic size: 420mm x 297mm. Visible size: 394mm x 271mm.