A rack mount network appliance may include a chassis that includes a front compartment proximal a front side of the chassis and a rear compartment proximal a rear side of the chassis. The chassis may be configured to be mounted in an appliance rack. A front vent on the front side of the chassis may be configured to allow air to flow between an external environment and the front compartment. A front loading module mountable in the front compartment may include a heat generating device. A front loading airflow module may be configured to draw in air within the front compartment into the front loading airflow module in a first direction and force air out of the front loading airflow module into the rear compartment in a second direction such that air is drawn in the front vent, over the heat generating device of the front loading module, and forced rearward over rear heat generating devices and out a rear vent of the chassis. The first direction may be substantially orthogonal to the second direction.