If you're still looking for that Renters Insurance, years ago, we got ours (about 14 yrs ago) through Liberty Mutual. I don't know if they still offer it, but it was very affordable at the time for us.
Most homeowners insurance companies write renters insurance. I remember when we were building our home we had renters insurance through State Auto. We have info posted about renters insurance in the home insurance section of FinanceNewsToday.com