1978 Fontaine STATIONARY, Truck Trailer, Fifth Wheels, Fits to: Mack RD685S, (Used) 1978 Mack RD685S, FIFTH WHEEL- Make: Fontaine, Model: 5A36-9-34, Serial: A221362, Location: Rear, Type: Stationary, Length: 43", Height: 14", Frame Width: 33", For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON MD, 21921, Truck Year 1978, VIN RD685S3685, RD685S3685