Synchronized Puffing Smoke with Chuff Sound

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Athearn 24896 N UP/ARMN/Chilled 57' Mech Reefer with Sound #902036 LastUpdated_20262207110350 Synchronized Puffing Smoke with ChuffThis is an Athearn 24896 N UP ARMN Chilled 57' Mech Reefer with Sound #902036. ARMN FEATURES: Previous run: March 2015. Phase I Modernized Body. Exposed end mounted refrigeration unit. Riveted sides drop sill. Door hangers. Early rod style coupler cut levers. MODEL FEATURES: Available with onboard SoundTraxx sound. Scaled from prototype manufacturers drawings and field measurements. Two different exhaust stack types: straight pipe with flapper or T