I need to upgrade my main panel to a 400 amp, with two meters, one for the main house and another for ADU. I cant find very many panels fitting this specs. can folks please provide some suggestions?

This is the type of panel I found by searching around, but not sure if this is what I need:

https://www.radwell.com/Shop?source=GoogleShopping&IgnoreRedirect=true&ItemSingleId=35550372&utm_source=google&utm_medium=cpc&adpos=&scid=scplp35550372&sc_intid=35550372&gad=1&gclid=CjwKCAjwivemBhBhEiwAJxNWN01DcnGw4Xm3uACbuiiGXRClzlUEXoLIB2xD5G4GAWicTlyzr5eQ0RoCk4YQAvD_BwE

thanks,

ac