Very stable, top quality, metal, flexible

The complete grid consists of 5 fence elements (2 short, 2 wide, 1 door), which can be put together in almost any order with 6 bars and a few caps. One can also omit elements and so obtain a shorter grid.

The color I would describe as a black matte.
The grating is screwed at both ends to the wall (or the like).

I personally like:

[+] Quick installation: The fence elements are pre-assembled, you just have to put together the elements, use the rods at the joints and at the end and put the caps. Done. Well, the wall mount will be drilled and bolted to the walls.
[+] Flexible Length + form: you can use all elements (maximum = 278 cm distance between both ends, depending on the angle) or the door with the short elements (= 82 cm) or some other combination. For this purpose, the angle at the individual compounds is individually adjustable in steps (a straight line but is not for reasons of stability).
[+] Erecting places: Can also be used for the demarcation to the fireplace because of metal. But need not, you can also the grid in front of the stairs or use elsewhere. One need only solid walls or similar, to the one anschraubt the ends. Due to the length you can use the grid even at wide stairs.
[+] Quality: High-quality workmanship, without blemish, smooth edges, high-quality acting metal and plastic
[+] Stable and strong!
[+] Width door, easy to open with one hand by an adult

Neutral I see:
[O] The height is about 70 cm - Other grids are often a bit higher (but there are some who are only 65 cm high).
[O] The door has a Fußschwelle (tripping) - but that is in these long positioning grids in principle (the whole thing is supposed to hold even with the door open).
[O] The manual is in correct German (and div. Other languages). The decisive figures are on the small side for my taste, but it is evident what is meant, and the manual is correct.
[O] The Grid can not simply unhook and fold (wipe around the ground). It takes the place permanently. One can but within three minutes dismantle (and only the wall brackets left) and quickly compose it almost as the items back (just the angle you need to re-fix) if you want to have it for some reason get away. For cleaning, I would not do every time.

Negative noticed ...
... Is to me so far nothing !!

Conclusion: It is a long, flexible, stable grid of metal gets in my eyes in top quality! Because of the material it is used by the fire. If you only need a grid for the stairs, perhaps better off with a plastic / wooden staircase door. But who wants to shut off the fireplace or who likes black metal per se for a room separation, can safely access here in my opinion.