Hi eric0668,
I’m not clear what you’re asking me that I haven’t already answered :dry:
Which picture do you mean? If you mean the picture you attached then it (and the instruction video at Ikea) doesn’t show any center support under the midbeam.
Post #89 here has more information about the pros and cons of different types of mattress protectors that can help you choose the one that is best for you.
Phoenix