Thermeco's sliding systems used a bottom roller-mounted sash that horizontally slides on a 20mm track, making them easier to operate than many other systems. With no projecting sash, they are ideal for use where opening spaces are limited. Ventilation control is achieves simply by sliding the sash. Matching robust sliding flyscreen or security screens can also be installed on this system. The inbuilt sub sill is a feature of this range with no requirements sizeable add on sections. A full choice of handles are available, they are lockable and can be keyed alike.