Ansich the frame is exactly what we wanted. Price-performance ratio is very good. Good workmanship. Very good sleeping comfort through the plate in conjunction with the Naturlatexmatraze. But! The plate strips squeak. There were swapped without objection from Ravensberger the first time the frame. The squeak was then still there. According to Ravensberger it was a false production - were missing felt strips at the supports. So once again replaced the bearings. Unfortunately, after a week, the squeak is back. Have not yet complained again - let's see. However Ravensberger was very accommodating and friendly.