Window design demands increase in an attractive home. Our concealed hinge side Roto NT Designo masters this discipline with bravura: No hinges visible from the outside, no caps – nothing detracts from the window's appearance because the less we can see of the technology, the better! The hardware system is suitable for timber, PVC and aluminium windows with 16 mm hardware groove. The aesthetics of the window hardware from the Roto NT range has been fully integrated into the Roto NT modular system so that here too you can utilise all the advantages in terms of features and installation. Suitable for : - Tilt&Turn / Turn-Only windows in timber, PVC and aluminium - Sash weights up to 150 kg