A cuboid has a net containing 6 rectangles.
It would appear that you have answered your own question. It is the net of a cuboid.
Cuboid
A cuboid has 6 faces that are rectangles.
Cuboid.
A cuboid.
A cuboid.
It is a cuboid. It is a cuboid.
A cuboid.
6
Cuboid
A cuboid has 6 faces that are rectangles.
Cuboid.
A cuboid.
Cuboid
cuboid
A cuboid.
A cuboid.
cuboid, rectangular prism