Wide aluminium bifold doors with 120mm profiles
The Sieger 120 Bifold Door is a high-performance aluminium bifold door system designed for wide structural openings, flexible layouts and contemporary indoor-outdoor living. With a 120mm vertical junction, thermally broken aluminium framing and internally beaded profiles, the system offers a strong balance of durability, security, weather performance and design flexibility.
Available with up to 14 sashes, corner opening layouts, biparting arrangements and traffic door options, the Sieger 120 Bifold Door is ideal for premium homes, extensions, developments and commercial spaces where large glazed openings need to operate smoothly and perform reliably.
Sieger Systems supplies and installs wide aluminium bifold doors across London, Buckinghamshire, Berkshire, Oxfordshire, Hertfordshire, Surrey, Bath, Bristol and Somerset.
Premium performance
Bespoke made to order
Designed & made in the UK
PRODUCT FEATURES
Sieger 120 bifold door features
Wide opening capability
120mm aluminium junction
Thermally broken frame
PAS 24 security
To learn more about additional features:
Technical performance
| Frame design | Contemporary slim-framed design that maximises natural light |
| Large glass panels | Accommodates expansive glazing panels up to 3 metres high |
| Energy efficiency | Designed to improve insulation and help maintain comfortable indoor temperatures |
| Security | Enhanced security features for increased peace of mind |
| Weather protection | Tested to perform reliably in challenging wind and rain conditions |
| Finish options | Available in any RAL colour, anodised, textured and dual-colour finishes |
GLASS OPTIONS
- Double glazed units
- Glass units up to 45mm thick
- High performance insulated glazing
- Security glass options
- Solar control glass
- Coated or laminated glass options suitable for the system
- Switchable tinted glass
- Heated glass
