After I could not find anywhere the necessary dimensions of the door (not even on the homepage of Ultrafit ?? !!), I ordered the door bar on the off chance. So it fits in only one of my doors. This has the frame width (measured inside) of 82 cm. I think it comes so to max 85 cm, so that it is still safe. The frame has a depth of 17.2 cm. Here the draw fits perfectly. The other frames from 18.7 cm not go. So here max to 18 cm. Rather a little less.
Why only 4 stars? Unfortunately my Reck has a small production error. A rubber grip is just above a hole for the screw. Unfortunately, you can not move, but just roll away a little de handle. Is not optimal for holding ...
But ok, for the price it fits. Also looks very stable and is great for training.
Hope I could help.
Ciao
PS shipping on Amazon as always top!