Staff Answer
Sep 26, 2026 - 09:49 AM
With serial 876871, your N821 is below 9126825, so you need the 637779 board kit (power and optical together) rather than the 628974 optical board alone. The kit is discontinued, so we're down to limited stock.
If you have any questions, just reach out at info@rvfridgeguys.com or call us at 800-712-8822. You can find everything we carry at www.rvfridgeguys.com.
