The standard 20-foot container or "dry van" is one of the most commonly-used containers for the shipment of goods in ocean freight along with the 40-foot container.
Dimensions of the 20-foot container
External dimensions: 6.058m long × 2.438m wide × 2.591m high (19'10.5" × 8'0" × 8'6")
Internal dimensions: 5.898m long × 2.352m wide × 2.393m high (19'4" × 7'8.5" × 7'10")
Door opening: 2.343m wide × 2.280m high (7'8" × 7'5.5")
Tare weight: 2,300 kg (5,070 lbs)
Maximum payload: 25,000 kg (55,126 lbs)
Volume: 33.2 m³ (1,172 cu ft)