The folded height of the stroller is approximately 109 cm, according to most sources. However, one source lists a different folded height of 41 cm, which seems to be an error or a different model variation. Generally, the 109 cm height is more consistent across multiple sources. If you're concerned about fitting it in your trunk, you might want to check your trunk's dimensions to ensure it fits comfortably.

The maximum recommended weight for the Graco Stadium Duo is 15 kg per child, which means that the maximum total weight for both children is 30 kg.

so none was included with the order. Is it possible to order separately?

The Graco baby car seats for the car are not included.

No, the front seat is not removable and the standing platform is between the two seats. By bench seat is meant the rear seat unit.