Open top cabinet is a cabinet type of OOG special cabinet, which is called OPEN TOP CONTAINER in English and is often directly referred to as OT cabinet. Open top cabinet has an open top, usually with a foldable roof, equipped with a waterproof canvas cover and a sealing device with a wire rope. Open top cabinet sizes include 20 open top cabinet sizes and 40 open top cabinet sizes. The size of a 20 open top cabinet is also called 20 OT, and the size of a 40 open top cabinet is also called 40 OT. According to the size of the open top cabinet, it is often classified as an OUT OF GAUGE special cabinet. From the pictures of the open top cabinet, it can be seen that it is based on ordinary containers and has the top open, which is considered a case of special operations.

The internal dimensions of a 20 OT container are 5.898 meters long, 2.352 meters wide, and 2.385 meters high; The external dimensions are 6.058 meters long, 2.438 meters wide, and 2.591 meters high.

The gross weight of the cargo is generally 20 tons and the volume is 33.1 cubic meters.

The internal dimensions of a 40 OT container are 12.062 meters in length, 2.352 meters in width, and 2.385 meters in height; The external dimensions are 12.192 meters long, 2.438 meters wide, and 2.591 meters high.

The gross weight of the cargo is generally 30 tons and the volume is 65.9 cubic meters

Open top cabinets can hold ultra-high goods, suitable for ultra-high, heavy goods, such as construction glass, steel pipes, various large machines, molds, and so on. Open top cabinets must be covered with a tarpaulin before they can be returned. Extra high goods need to be additionally covered with a tarpaulin.