Install the Metal Washer and Decorative Cap

What happens here

With the main body and side covers installed, place the metal washer over the assembled components, ensuring it sits flush. Finally, take the decorative cap (initially shown as a chrome-finished piece) and snap it securely onto the base assembly. This final action completely conceals the shut-off valve and its connections, achieving the desired aesthetic improvement. The demonstrator affirms the completion of the installation by stating, "And you're done."

Goal: Complete the aesthetic transformation by securing the final decorative elements.