I bought a 4m wide door for self-installation a couple of months ago. The door itself was decent quality - there was a dent in the curtain when I received mine, but we only noticed it once we'd put it up - and as it was near the top I didn't make a big deal of it as I didn't want to have to uninstall it all. You'll need 3 people to put it up- even 2 aren't enough. My main issue is with the instructions for setting up the control system. They aren't especially clear - obviously written by someone who knows exactly how to do it, so they don't tell you precisely what to do, step by step. There's also no exact wiring diagram for the various cables - so unless you are an electrician, you'll struggle. And the steps needed to programme the remotes are vague, so I had to ask Rollador to send someone to do it as the doors would sort-of half open and close. In summary, they are good doors, but unless you want a fair bit of frustration, pay the extra get them to install them as the instrucions are very poor (maybe that's the idea ?).