The National Geodetic Society finalized its release of GEOID18.

See NGS site for more information https://geodesy.noaa.gov/GEOID/GEOID18/

For Trimble software users, see attached Trimble support bulletin to immediately add GEOID18 to your Trimble software.

Any questions contact Seiler Tech Support or call us toll free:
Technical Support: 844-266-7266- Missouri and Illinois
Technical Support: 844-602-9313- Kansas City
Technical Support: 844-602-9312 – Milwaukee
Technical Support: 844-602-9314 – Indianapolis
Technical Support: 833-245-4091 – Omaha