Questions about Tojo parallel

Hello, What is the distance between the floor and the underside of the bed? What is the distance between the boards (important for choosing the mattress)?

Hello, could someone tell me the thickness of the boards?

Is the bed wobbly?

Dear team, I need a bed frame with a length of 210cm and a width of 120cm. I am aware that I can make the bed wider but what size do I order if I need the 210cm length? Thank you for your support.

If the elements are assembled according to picture 3, is the width 180 for a 180x200 bed? I.e. you have the option to make the bed "wider" than 180 if the elements are assembled according to picture 4. Is this correct? The same applies to the other bed sizes, i.e. a 140 can be 140 wide, but can be made wider if it is assembled according to picture 4. Correct?

I would like to buy the bed... 200 x 200 cm but in 2x 100x 200cm....Do I have to buy two 1m Better.... Or can I also make it out of the 2m bed.... And separate them?

The person I share my bed with prefers a different mattress set than I do, so we would need one hard and one soft 90 mattress in the bed. Is there any way to fix them so that they don't slip apart? With a "normal" bed frame they would be held by the bed frame.

Do I understand correctly that if I make the bed 200cm *200cm, I can also make it smaller. I would then only have to remove the wooden slats and push the boards together?

I have a Japanese futon. Would it work well with this bed structure?

Can the old bed be disposed of by Galaxus and given directly to the transporter?