SF-16 and SF-26 are systems for sliding panes of up to 16 and 26 kg/pane respectively. They have a top profile of anodised aluminium with side grooves that allow for easy fitting. The system of rollers, two for the SF-16 model and four for the SF-26 model, at the top (suspended model) allows the bottom profile to be completely hidden. The eccentric bottom guide, allowing greater adjustment for possible imperfections, completes the system. Highlights include the 3.5 mm height adjustment for both models, on installing two doors, the separation between them is at least 3 mm and both systems can be fitted in 16-19 mm timber.