Sieger 120 Bifold Doors

Slim Framing, High Performance


Create beautifully large open apertures with the Sieger 120 Bifolding door. The aluminium bifolding door can contain up to 14 sashes; each sash measuring a maximum size of 1.2m wide x 3m high. This bifolding system boasts impressive levels of thermal performance with a minimalist design to create a contemporary finish for both new builds and renovations. It is available in a broad selection of configurations, and with vertical sightlines of just 120mm the Sieger 120 bifold door is the most popular choice for modern projects. The highly versatile design is suitable for balconies, terraces, living rooms, open-plan kitchen/ dining areas and more.

Sightline: 120mm across both panes

Thermal Insulation: Uw values from 1.4 W/m2K

Security: PAS 24 Certified

Max Size: 1.2m wide x 3m tall per pane

Configurations: available as bi parting and opening corner doors

Weather Protection: fully tested for weather performance, air (4), water (9A) and wind (A3)


three pane aluminium bifold patio door with dark grey frames in a modern kitchen extension
corner opening bifold doors with slim aluminium bifold frames
multiple sieger bifold doors used in a new build home with unique green patio door frames
These aluminium bifold doors are a fantastic choice for both new buildings and replacement glazing. The aluminium system provides a simple yet effective solution for door openings that boast high levels of thermal performance paired with modern design.

Our modern thermal break technology provides advanced thermal performance for your bifold door install to deliver comfort and energy efficiency to all buildings.

For a full glazing package a range of associated glazing products are available to complement this bi fold door, including roof glazing and aluminium windows. Our complete range of glazing solutions provide architects, developers and discerning individuals with a wide choice of glazing solutions.

Full technical specifications for this bifold door can be found in our product specification sheets below. If you would like to specify the Sieger 120 bifold door on your project just get in touch with a member of the team who will be happy to assist with costing and design. 





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