Have a Bosch HBR78B750, unfortunately in this manual only the excerpts were available. Thus, we chose a full extension (The plates can be completely pulled out in front of the oven) to buy. Our choice was here on the extract of the same name manufacturer Bosch. The change of inserts is a matter of 5 minutes. But beware, even if you think it does not fit Yes, it fits, one has only a few mm play. At first I was a bit skeptical whether this can stand our Lasagna Casserole its contents, but it fits easily and looks very stable. The rails run very, very pleasant and clean. Strong buy recommendation and adds the oven perfect! My wife really meant nonsense, goes even so, now you is excited: D