AluK – Optio BSF70 Bi-fold Door
Welcoming, stunning, practical.
An intelligent combination of form and function, our highly versatile and market-leading Bi-fold sliding door system gives you maximum control over the style and operation of the doors.
Multiple panels can be added to accommodate the design specifications of your building, with the option to open in or out as required. The system also boasts a unique flush line pop-out handle that allows for square flush stacking panels when doors are fully open.

Key Selling Points of AluK Bi-fold Doors
Benefits | Features |
---|---|
Maximum door opening and panels stack square | Unique pop-out handle |
Smooth and consistent operation | Four stainless steel rollers |
Limited chance of break-ins | Tested to PAS 24 |
Other Key Features
Options |
---|
Chamfered and square bead options |
Glazing 28mm – 40mm |
Available in a range of opening configurations |
Available with heavy duty rollers: BSF790 HD |
Available in a range of single or dual colour and anodised finishes |
Door Configuration
Beautifully organised
As with all AluK aluminium system, you’ll find an extensive choice of configurations available to choose from. And as ever, all are available as open in and open out for added homeowner choice.
Solutions
Opening | Open in and open out | Open in and open out |
---|---|---|
2-2-0 | Yes | Yes |
3-3-0 | Yes | Yes |
3-2-1 | Yes | Yes |
4-4-0 | Yes | Yes |
4-2-2 | Yes | Yes |
4-3-1 | Yes | Yes |
5-5-0 | Yes | Yes |
5-3-2 | Yes | Yes |
5-4-1 | Yes | Yes |
6-6-0 | Yes | Yes |
6-3-3 | Yes | Yes |
6-4-2 | Yes | Yes |
6-5-1 | Yes | Yes |
7-7-0 | Yes | Yes |
7-4-3 | Yes | Yes |
7-5-2 | Yes | Yes |
7-6-1 | Yes | Yes |