I have getting several requests for these very large Smart UPS units. We only see a few a year, and honestly its not a favorite of mine. SURT20KRXLT
First off, its the Smart UPS RT Online unit on steroids. Its a 12U non modular single phase unit. At $12,000 new its not that much less than a modular and scalable Symmetra unit. But unlike the Symmetra, this one can give you the full 20,000va.
But wow, if it fails.... you just got a 700 lb paper weight. And with no bypass and poor surge protection, this will be fun to replace.