the 49L90 is technically identical to the 49L9001

this Type J flange provides the torsional stiffness and durability required for industrial-grade performance without the need for lubrication

using OEM HVAC replacement parts is recommended to maintain system efficiency

and override outputs for testing purposes

PopTop Compatibility: Features the quick-release actuator interface for simple

Carrier 48CH402274 Heat Exchanger 322057-301 the 49L90 is technically identicalThe Carrier 48CH402274 Heat Exchanger is an essential OEM replacement part engineered specifically for high efficiency Carrier rooftop units and commercial gas electric packaged systems. As a veteran technician knows, maintaining the integrity of the combustion cycle is paramount; this direct fit heat exchanger ensures maximum thermal transfer while preventing the mixing of flue gases with the supply airstream. Constructed from durable, corrosion