Dometic  CD-50 refrigerator and installation kit for Kenworth T680 and  T880  model  trucks, all years.  

• 12/24 volts DC
• 40 Watts power consumption
• Weight: 44.1 lbs.
• 50-liter total capacity
• 1.65 cu. ft. gross capacity
• 6-liter freezer capacity (optional)
• Temperature Range: 28.4 °F " 53.6 ° F
• Dimensions: 14.96" W x 21"  H x 19.6875" D
• Color: Black face panel, and drawer surround
• Freezer compartment is removable
• Durable metal frame construction
• Fully hermetic compressor with integrated control electronics
• Easy-pull drawer on roller bearing slides
• Unlock and open with a single movement
• AC operation with covered back-plate
• 2 Year Warranty

See more link for installation instructions