20ft Reefer Container Dimensions & Specifications Dimension Measurement External Length 20 ft (6.09 m) External Width 8 ft (2.44 m) External Height 8.6 ft (2.62 m) Internal Length 19 ft (5.8 m) Internal Width 7.8 ft (2.34 m) Internal Height 7.10 ft (2.38 m) Door Width 7.8 ft (2.34 m) Door Height 7.5 ft (2.26 m) Weight and Temperature Specifications Tare Weight: Approximately 6,370 lbs (2,890 kgs) Maximum Payload: Around 60,830 lbs (27,590 kgs) Gross Weight: Up to 67,200 lbs (30,480 kgs) Temperature Range: -40°F to +70°F for a standard reefer; blast reefer may go even lower.