Windows with slim frames
Slim window frames provide more glass surface area and maximum daylight, making rooms appear brighter and larger. Their minimalist design looks modern and elegant, putting the architecture of your home centre stage.
What sets our particularly slim window frames apart
Windows with narrow frames flood rooms with daylight, open up wide views and bring elegance to any architecture. The frames of our windows are more than 12% slimmer than those of comparable window systems currently on the market. Compared to windows from previous decades that are in need of renovation, they are even up to 20% slimmer. This applies to all our tilt and turn elements, such as windows and patio doors. No one else offers such slim frames for so many different materials and styles.
Discover our windows with particularly slim frames
Maximum minimalist window frames
Maximum minimalist window frames
The revolution in high-end window design
Extremely slim – 5 cm frame view (3 fingers wide!) on all 4 sides and all elements.
Inspired by the look of a picture frame, equally slim on all four sides and fascinatingly slim with a frame width of only 5 cm, ONE brings back the slim elegance of earlier windows. And that applies to all elements and opening variants such as windows, patio doors, fixed glazing and sliding doors.
Every style of home deserves sleek and beautiful windows. Whether you prefer avant-garde, modern or new classic, with us you can always choose minimal frames and maximum glass surface area.
FAQs about slim window frames
Josko's slimmest window frames – especially those in the ONE range – measure just 53 mm in width on all four sides. Our wood/aluminium and plastic/aluminium systems are also up to 12% slimmer than comparable window systems on the market.
Slim frames provide more glass surface area, allowing more daylight into the home and creating a brighter, more spacious feeling. They also bring more solar energy gains, which can save on heating costs in winter.
All our windows come with triple glazing as standard and achieve excellent thermal insulation values. The slim frames do not compromise energy efficiency – they actually increase solar energy gain thanks to the larger glass surface area.
Yes. Slim windows are particularly well suited for renovations because they allow more light and larger glass surfaces even in existing openings. Their narrow profiles immediately make rooms appear more modern and brighter.
