Initially sent photo of velux window label to customer service as didn’t know which range of blinds to order. Received comprehensive reply detailing all options available for specific window. This was vey useful as without it I would have struggled to purchase the correct blind. Initially I found fitting instructions difficult to follow just from the pictorial guide and some narrative would have been helpful. Searched on line for YouTube video which although didn’t match the model of my velux window, which is 20+ years old was useful. After a couple of hours, once I had fitted the blind the basic pictorial instructions that came with the blind made perfect sense! All in all a lesson learnt because if I had to fit another one it would be a fitted in 15 minutes.