I am very satisfied with this security barrier. Entertaining and yet strong and aesthetically beautiful. It can be installed in openings whose width 75 cm minimum and 82 cm maximum. Installation is relatively easy, I needed a hammer to insert the small gray room (which shut down the barrier) and then the small key (which is provided) to tighten progressively on each side, then down up. I chose the fixing by pressure (it holds extremely well) as it does not need to drill or screw. The barrier opens in 2 directions.