The sizes are all finish sizes.
Take 70x100cm Framed Canvas for example. The size is finish size including frame.
Set’s sizes are each individual pieces’ size.
Here is an example of Set Of 2 sized 70x100cm.
The same size option used for Landscape and Portrait wall art.
Refer to the 2 samples above, one is in Landscape orientation and the other is Portrait. They are both sized 70x100cm, instead of 70x100cm & 100x70cm.
How much does a wall art print weigh?
Framed Canvas or poster (approximately)