But perfect adjustment operation after the installation was difficult. Indeed, the two lamp holder holes are very close together and it is very difficult to meet the horizontal level when you have to drill holes in a front wall plaster (the engineer has not trying to ride her product on any surface). When you have solved your problem after your stool, you have to screw a small screw on the right side of the box that holds the lamp (it avoids the flights). The screw is very small, on the right side for right-handed only, and the game is important between the support and the lamp unit. And at arms length and strength, in the cold, the screw has a tendency to not want to get his hole easily. In conclusion, a good product that would benefit if its mounting is facilitated (large screws holding the front and stand with level adjustment holes to deal with irregularities walls pierced).