Solid training equipment not suitable for all door frames

The very simple device is very stable and sufficiently well finished. The resting on the door frame points are covered with rubber. The first time the springs of the support struts are very stiff. Here you should keep ready oil, grease and possibly a large pair of pliers.

Unfortunately, the product description is insufficient, so I got up a drawing pasted to another to protect against a bad buy.
Much more important than the door frame opening is in fact the cross-section of the door frame.

The door frame has at least one opening of 67cm have (own measurement). The maximum width of the opening depends on the training device (90cm long) and the nature of the door frame. In the product description here 78,5cm be specified as maximum width. I think 80cm are also ok, then you stop 5cm on each side. More than 85cm should not have. You also have to make sure that the door is not in a corner of the room or furniture are too close to the frame.

For me the whole thing but failed on the door section. Especially residents of older buildings will get problems here. see image. That's why I've only awarded 3 points.
Fortunately, I have not found in the basement of a frame on which I can use the device. Compared to conventional door bars that are mounted in the frame, it has the following advantages:

- Acts stable
- Lower risk of damage to the frame
- Easier and safer to mount
- The training rod hangs higher
- The bar is wider and therefore more training opportunities to

Scope of supply:

- Pull Up Bar
- Illustrated instructions of Powerbar in English
- Illustrated instructions of Sportland in German

Edit after 3 years: The supplier has now read the description, the manual and, if I have the pictures of Todor look at me, even the product itself improved. That deserves a better rating. Because the dimensions have not changed, the 21cm frame depth are too optimistic. If the frame size is smaller than 8cm, then what you certainly can still get something out, but surely not 21cm. For 8cm height continues to apply no more than 16cm deep.