I'm yet to use this (though I have pondered around the thought of climbing out the window of my first floor flat, more than certain giving the neighbours below a heart attack as I 'spider-man' past them as they causually sit watching the 6 o'clock news about local burgularies) but the build quality seems extremely robust. Fingers crossed the only purpose it supplies me with is taking up room in my hallway cupborad.
This is the best escape ladder I have seen, so I bought two - one for the 2nd floor and one for the third floor. The sturdy ladder is well made and I have tested it to check the length and quality of fittings. The instructions supplied are clear and informative. My family now has an escape plan in the event of fire. every house with a 2nd floor and above should have an escape ladder. I remember the harrowing news items of people hanging out of windows trying to escape a burning building. Hopefully, we will never need to use the ladders and fire extinguishers or hear the loud smoke detectors. we have at least one smoke detector in every room and two in the kitchen. We also have a smoke detector above the tumble dryer. Cannot be too safe where fire at 3 am in the morning is concerned.
I have never had to use it and I hope I never will. It looks well made and easy to deploy. I recommend that you take it out of the box and familiarise yourself with it before use. It does say not to use above windows below.