You need what is called a Single Bar LED grow light. ChilLed makes an awesome 40 inch and 20 inch single bar grow light, they are highly operating efficient. Fluence makes a great single bar grow light and there are many more companies as well.
They will work better if you are trying to be more efficient with your limited grow space.
I have the ChilLed X1 160w & 65w versions are they are phenomenal in my limited grow space.
GrimReffer mentioned the MarsHydro SP3000, that would be another great option also.