Height:  Largest sash sizes available, up to 1200mm wide and 3000mm high per leaf.

Width: Up to 16.8 metres with (recommended) up to 7 leaves per side.

Key details: Super slim sightlines of just 107 mm from frame to sash.

L compliant U-values as low as 1.1 W/m2K.

Our market-leading Aluna bi-fold system offers exceptional flexibility, with configurations of up to seven leaves in each direction (14 panels in total). Doors can open from the left or right, and be configured to fold inwards or outwards to suit the property layout. For projects demanding a real statement feature, the moving corner post option allows right-angled bi-folding door, including the return, to open out completely, with the alternative of a fixed corner for structural stability.

Precision-engineered hardware ensures silky-smooth operation, making opening and closing effortless. The result is a system that not only maximises light and space, but also delivers a striking visual impact, perfect for connecting indoor and outdoor living.

Our Aluna bi-fold patio doors combine cutting-edge engineering with an extensive range of stylish finishes, delivering a product that is as impressive in performance as it is in appearance.

With one of the largest sash sizes on the market, up to 1200 mm wide and 3000 mm high per pane, this system is perfect for creating expansive glazed openings that flood spaces with natural light.

Engineered for energy efficiency, the Aluna system achieves Part L compliant U-values as low as 1.1 W/m²K (DER Rating B) with triple glazing and 1.4 W/m²K with double glazing, helping to meet even the most demanding thermal performance targets.

Featuring click-and-forget clip-in beads, the system allows for quick, hassle-free glazing, while 120 kg heavy-duty wheel hardware ensures smooth, unrestricted operation, every time.

With an expansive choice of handles, hardware, and accessories, Aluna can be tailored to suit any design preference. Each door is colour-matched across the entire Aluna luxury product suite, including sliders, windows, and rooflights, for a cohesive, premium look.

Manufactured from marine-grade aluminium as standard and fully tested to PAS 24 security standards, the Aluna bi-fold system delivers strength, style, and peace of mind for every project.