VELUX Skylight Repair or Replace What you should know

What should you know about VELUX Skylight Replacements ?
Here are official guidelines put out by 

VELUX America:

Reference  V-USA-1-0-10

VELUX Skylight Replacements

2111 Magnum Cir Ste. 2 Lincoln, NE 68522
Monday9:00 am – 5:00 pm
1-402-450-5641