If you run a growing business that needs to hire middle-level managers, this is for you. Please look for people who have a combination of these qualities which cannot be taught or which only need to be taught once: Wisdom, political savvy, intuition, responsibility, drive, intellect and maturity. Beyond skill which you can pay for, these traits are the hallmarks of leaders.
I would include attention-to-detail, as careless mistakes will not only sink your business but also, the excessive supervision required, negates the point of having managers.
Finally, look for closers. People who get the job done without excuses (not people who engage in a lot of activity with no end result). When you find these managers, bonuses and stock options should be put on the table. This is because they are the staff who will grow your business; the people who will generate the salaries that everyone else will enjoy.