An inkjet printhead having arrays of nozzles wherein each of the arrays has a corresponding ink inlet. A mounting substrate includes a first face with first openings fluidly connected to corresponding ink inlets of the arrays. A second face opposed to the first face includes a plurality of second openings fluidly connected to openings of the first face. The ink outlets of the ink chambers are fluidly connected to corresponding second openings in the second face of the mounting substrate, an outer wall is disposed proximate to the plurality of inlet ports and a second outer wall is disposed opposite the first outer wall and distal to the plurality of inlet ports. Each ink chamber has a portion located proximate to the first outer wall and an outer chamber of the plurality of ink chambers has a portion located proximate to the second outer wall.