Commercial Loan Help

[Jason V.]

Hoping for some help with a plain-english translation of this information from my Community Banker on commercial loans:

“5-year fixed rate, 10-year maturity, up to a 20-year amortization. Start rates are around 4.75% and will adjust to the 5-Year Treasury plus 3.5% with a 4.75% floor.”

So rate is fixed for the first 5 years and start at a minimum of 4.75%. After 5 years, the rate becomes variable and will match whatever the 5-year treasury rate is, plus 3.5%, again, with the minimum rate being 4.75%. If I was in year 6 of a commercial loan right now, my rate would be 4.83% (3.5%+1.33%)

What I don’t understand is the 10 year maturity/20 year amortization – could anyone explain that to me? Would this mean it's a 10 year balloon? 

FYI - this would be a tiny amount of money for a commercial loan, and she just provided this information to me because I asked her about it in passing. I'm not to the point of needing commercial loans yet, but would still like to know more about them.

Thanks!