What is the height when fitted to Classic Ottoman base? Is it 30cm (height of ottoman) plus 50cm (height of headboard) making combined height 80cm or is space allowed for the mattress? If so, can the position be adjusted depending on mattress thickness?
You can attach the headboard so it fits directly on top of the divan base, the divan base is 37cm so the total would be 87cm,. However you can also adjust the headboard struts to make the headboard sit higher so the mattress can fit between them. This height would vary depending on where you adjust the headboard to.