I just finished editing. My door is 100x45cm. Please note there has been a small change since the creation of this announcement. > The bottom of the scale is larger than in the description. Allow 41cm wide. In other words, your door should not be less than 43cm width. The assembly does not require special skills. Please have a good screwdriver, a wrench 8 and 10 and what counter (adjustable wrench or pliers). I added some washers on the articulated and parts against nuts to more serenity. But the supplied screws may suffice. I also cut the hacksaw 4 screws too outdated for my taste. Be careful when tightening of the handrail not to force too much. This may damage the structure and thus the weakening. The notice announces 150kg max. For a three-year use the quality seems to appointment. Anyway, at this price is very correct. Especially compared with the competition. RAS and fast delivery side. Very good solution to equip a door width> 45cm for occasional use and cheaply.