Just had a 4m wide pair of sliding doors installed - they are stunning. The product is very high quality, it comes with some very stylish Niko switches for the powered locks, a minimalistic frame in anodized platinum aluminum and a massive amount of glass for an unobstructed view. Dealing with company is a pleasure, James for the initial quote, Dan for the site survey/installation and then a team of fitters to do the installation. All are very professional with queries quickly answered and advice freely given. I've dealt with quite a few companies and have no hesitation is saying Ultraline is the best, very professional and stunning products.