I have the mattress in 140 * 200 H3 "140x200 bed frame with solid pine Slats 60.38-14 bed" kombiniert.Mein vorriges with the bed also had a H3 therefore I stayed at the same strength class.
The mattress was delivered rolled. I gave her 2 days to fully develop (rich according to the manufacturer 24hours).
Of course, the mattress initially relatively strong smells and even now after a month you still smells slightly "mattress" if you were not zuahuse all day and had not aired. But in a tolerable extent.
After a month in use with the rigid roll grille I can (70kg) only say: very convenient, can sleep well on it. Even for two no problem, the mattress is still dimensionally stable as the day. I'm very happy with it. :)