The landing board is also apparent. See the economic comparisons note near the end. Top width - 500 mm. Base width - 250 mm. Vertical height - 300 mm.
All measurements are internal.
By using swarming bees, one only hopes that they have stronger queens. I don't confine them after hiving as I think it stresses them too much. When I hive a swarm, I put in the divider board to reduce the volume and they have responded positively to this. I usually also take a comb of brood from an established hive and put it with them to try to persuade them to stay. It doesn't always work.