ONE

ONE is a window and sliding door system by Josko, a doors and windows product family with aluminium windows, sliding doors, fixed elements, interior doors, insect screens and handles. The system uses a uniform frame look of only 5 cm on all sides, both outside and inside, across fixed units, windows and sliding doors. Its layout is based on equal frame widths on all four sides, with multi-part elements divided in the middle so each sash remains symmetrical inside and outside.

ONE combines modern triple glazing with thermal insulation ratings described as suitable for passive homes. The ONE ALU technical data gives a best Uw value of 0.79 W/m²K, a system depth of 70 mm and soundproofing up to 46 dB. A core made with moisture- and weather-resistant composite technology and thermally separated aluminium is used to support the system’s building-structure and thermal properties. The glass panels are bonded to the frame on the outside and inside, a detail intended to increase resistance to cold, noise and wind as well as burglar resistance and stability.

The range includes ONE Alu in RAL 9005 deep black matt, RAL 7016 anthracite grey matt and RAL 9016 white matt for interiors, with many RAL and effect colours, powder-coated or anodised finishes outside. ONE App adds interior surface applications in wild oak, oak, spruce and larch, walnut, black glass, brushed aluminium and genuine steel. Optional parts include a design window sill, a black Isostep PVC threshold for patio doors, Venetian blinds, roller shutters, insect screens, drainage channels, glass balustrades and security features.