The AAON RL Series Large Commercial Unitary Products have superior features that set the highest industry standards. Features like the walk-in service and controls compartment provide access to the center of equipment operation. The standard unit is provided with pressure opposing hinged access panels and constructed with rigid polyurethane foam insulated, double wall cabinet, construction. Air is moved with an array of high performance, direct drive quiet backward inclined blowers. These features, along with AAON innovative capabilities, have made the AAON RL Series the leader in the industry.