Awful product, you need the patience of a Saint. The instructions are wrong as well it's better to follow common sense than the instructions.  The unti come in two and trying to get the two to perfectly match up takes such a long time. Very unsafe product as well, the hooks and brackets that hold the unit on the wall have no end so it can just slide off the wall. My partner trapped his finger and cut its deeply.  We also scuffed the wall badly as the unit slid off the end. 
I have seen some amazing reviews for this product but I can't write anything positive about it.