Modern sunroom with gray tiled floor, beige armchair, glass table with plants, and open glass door leading to an outdoor patio and garden shed.

BSF 70

The BSF70 Folding Door System gives maximum control over the style andoperation of the doors. Multiple panels can be added to accommodate theunique design specifications of the building, with the option to open-in orout as required. The system’s narrow profile ensures that maximum glazing isachieved, flooding spaces with natural light.In addition to the inherent strength of aluminium, the BSF70 combines securityhinges and locking mechanisms with a unique heavy-duty roller design toprovide the security and reliability demanded in high traffic applications. Thesystem also incorporates a pop out T-handle design that allows for squareflush stacking panels when doors are fully open

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Cross-section of a modern insulated glass window frame showing multiple layers of glass and metal framing.

PERFORMANCE AND ACCREDITATIONS

U-Value (Double Glazing) (Ug: 1.0 W/m²K)

1.6 W/m²K

U-Value (Triple Glazing) (Ug: 0.7 W/m²K)

1.4 W/m²K

Air Permeability (Standard Threshold)

Class 2 (300 Pa)

Water Tightness (Standard Threshold)

Class 4A (150 Pa)

Wind Resistance

Class B (1200 Pa)

SYSTEM

Depth

70mm

Center Profile

140mm

CONFIGURATIONS

Opening

Open-In & Open-Out

SIZE AND WEIGHT LIMITS

Leaf Height

3000mm

Leaf Width

1000mm

Vent Weight

120kg

GLAZING

Glazing Thickness

13.52mm -40mm

SYSTEM FEATURES

Single Colour

Yes

Textured Finish

Yes

Anodised Finish

Yes

Lock

Cremone, Multipoint

Multi-Point Locking

Yes

Technical cross-section drawings comparing dimensions of standard and easy access frames, each 130 mm tall, with varying internal measurements and labeled widths.

Internally beaded with a softline or square detail to all external doors and panels

Four stainless steel wheels ensures smooth and consistent operation

Unique, flush line pop-out handle that allows maximum door opening and square stacking of panels

Heavy-duty roller options

Chamfered and square bead options

Low threshold option that can be configured to achieve DDA and Part M compliance

Doors and panels can be used in a varietyof configurations, style and design

All configurations are available in bothopen-in and open-out options

Full range of bespoke hardware available

Glazing sizing range of 13.52mm–40mm

Available in single or dual colour polyesterpowder coating, texture and anodised finishes

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Connect With Our Experts

FAQ

What is AluK, and why should I choose it?

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AluK is a globally recognized Italian brand known for its high-performance aluminum doors and windows. With a strong focus on innovation, design, and energy efficiency, AluK products offer premium aesthetics, durability, and excellent thermal and acoustic insulation.

Are AluK doors and windows suitable for coastal or harsh environments?

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Definitely. AluK products are engineered with high-quality aluminum and surface treatments that offer superior corrosion resistance, making them ideal for coastal, humid, and extreme weather conditions.

What kind of maintenance do AluK products require?

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AluK systems are low-maintenance. Routine cleaning with mild detergent and periodic checks on hardware and seals are typically all that’s needed to keep them functioning and looking like new.

Are your installations handled by trained professionals?

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Yes. Our team is trained in fabricating and installing AluK systems to the brand’s exact specifications, ensuring quality workmanship, proper fit, and long-term performance.

What is the lead time for AluK door and window installation?

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Lead times can vary based on system type, customization, and project scope. On average, it ranges from 4 to 8 weeks. Contact us for a project-specific timeline and we’ll keep you updated at every step.

Can AluK systems be used for both residential and commercial projects?

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Yes, AluK systems are versatile and engineered to suit both residential and commercial applications. Whether it's a luxury home, office, retail space, or large-scale façade project, we can tailor AluK solutions to your specific design and performance needs.