Caution, internal dimension for slatted frame 90x200 as indicated but 86x200 ??? Since no standard slatted frame fits in. The boards are supplied 86cm long, the mattress is therefore the frame on. A slatted frame fits most on top of the frame, it is then but the side visible (super, looks really great). As has again a thought along. Super slatted I can cut into the barrel, the mattress is lying down on the bare boards. I am annoyed to death, my son was far much better. If I had not waited so long to set up, I would cut the bed around the ears the seller. Now I have to rebuild the bed itself, have thus only purchased the wood. But it was too expensive. Dear lay a few euros on it and buy something more sophisticated.