Relies on two tiny brass inserts set in plastic to hold the entire weight of the door. This in theory is ok providing they don’t fall out of captivity when you are screwing the door to the panel. Bathroom fitter with over 30 years experience and have fitted over a dozen of these units prior to this one. In the end, I had to ask the customer to hold the door while I managed to screw in the top fitting whilst holding the brass insert in place. £430 inc.delivery, laughable build quality.