I have the new wave doors fitted. I bought a set direct from the Bristol supplier and they fitted them back in 2014 when I was building my extension. I went for 4 Alu panes, each 0.9m wide I think.
The product is a great idea, allowing a bit more flexibility over bi folds but I did find back in 2014 the customer/office service was appalling and the product quality only 90%. Don’t get me wrong, the guys fitting are great but the office service in terms of arranging a fitting date, paperwork and payment was extremely poor.
Still, I’m pleased with the product, but next time I’ll be going elsewhere. (Just had a look at some of the google reviews!!)
Happy to show my installation if you’re native to north bristol.