This is a compact heater/defrost unit by Vintage Air. It is complete but no instructions which are available online from Vintage Air. It was installed in a project I purchased last year but never run. It has had coolant to it, as it was hooked up but shows no sign of circulation. From Vintage Air website... ............................................................................................................................................................. 506101 - Gen II Heater with Defrost and Servo Door Control Price: $229.00 Gen II Heater with Defrost and Servo Door Control New design provides superior performance from servo-motor-controlled air door improved case design and our exclusive electronic servo-actuated heater control valve. New 3-knob control operates temp fan speed and heat/defrost balance. Includes universal defrost ducts. Also may be used with optional dash louvers. Includes 3-knob control panel (knobs can be mounted directly into dash). Electronic Servo Heater Control Valve included with kit. ............................................................................................................................................................. Unit was QC inspected in 2013. Don't know when it was purchased and installed. $185 includes lower 48 shipping.
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