When buying single Splashwall panels, don’t forget to select the right fixings for your project. Available in a choice of colours to complement or contrast with your panels, simply cut to size as needed. For use with Wetwall Mermaid Collection Panels. External Corner in White 2420mm in length can be cut to size. For use on external extruding corners. These trims are used to joint two 11mm thick laminate wall panels together at an external corner.