Stronger profiles:Thickness of aluminum profile is 1.4-2.0mmBest Rollers:Use bearing wheels and slide smoothly.Best sealing:There is ladder track profile to avoid water and dust.Easy installing:We will offer instructional manual to make installation easily.Glass:Single glass or double glass are available.Hardware:Many kinds of locks are available, German brand or Chinese brand.   glass sliding windowFinzone is professional in the balcony glazing system over the last 11 years. As the manufacturer and exporter of frameless balcony glazing system, we have many clients in more than 30 countries around the world, especially in Europe such as Finland, Sweden, Spain, Poland, etc. We can provide material to wholesale customers and also assembled products to retail and project customers. We have more than 5 different systems can meet different demands on balcony, terrace, patio, sunroom, even partition wall.  Factory introduction