This weatherproof, zinc-plated mounting plate is used to mount the TimePilot Extreme Blue time clock. Note: This product will not fit the earlier model TimePilot Extreme clock. How can you tell if it will fit your clock? If the front of your clock says “TimePilot Extreme Blue,” it will fit; if the front reads “TimePilot Extreme,” it will not. For more information, please contact our Support Department at 630-879-6400 or Support@TimePilot.com.