Nationwide Coils has a vast database of coil drawings for all AAON units including the RN50 package roof top unit. Have you seen premature coil failure on your AAON units? We build each coil using the highest grade materials of construction available in the industry. Our standard copper tube wall thickness .07" thicker then what is supplied in the OEM package roof top units. Coupled with Energy Guard USA coil coating we can offer a 5 year warranty on all your replacement HVAC coils. We look forward to offering you a competitive advantage while increasing the quality and lifespan of your replacement condenser coils.