Aluminium exterior door L121-1 made to order

Aluminium exterior door with quadruple glazing and advanced thermal insulation (Ud = 0.85 W/m²K). 92 mm profile with articulated thermal break for superior comfort and energy efficiency.

The L121-1 exterior door represents a premium accessibility solution for properties requiring maximum energy performance and long-term durability. Constructed from aluminium with a 92 mm profile and articulated 34 mm thermal break, it positions itself in the upper segment of modern exterior doors, delivering reference-class thermal insulation.

The aluminium benefits from comprehensive technical treatment: a 3 mm thickness ensures exceptional structural resistance to wind and impact, whilst the triple EPDM gasket system creates uncompromised airtightness. The quadruple glazing (configured 44.1 triplex / 5 mm satin / 44.1 triplex) combines mechanical strength with optimized acoustic properties, substantially reducing external noise transmission.

The Ud coefficient of 0.85 W/m²K, certified through ift Rosenheim testing, positions this door among the strictest energy performance classes in Europe. The total system thickness of 92 mm, with frame depth of 80 mm, permits installation in modern thermally insulated construction without requiring complex structural adaptation of existing building elements.

Flexible sizing up to 1200×2500 mm (single leaf) or 1100×2300 mm (dual configurations) adapts to diverse architecture, from contemporary homes to heritage property renovations. The door supports both standard hinged opening and sliding systems, according to space requirements and user preferences.

Recommended for primary entrances in contemporary residences, commercial spaces with moderate traffic, and renovation projects where energy efficiency and acoustics are paramount. It integrates seamlessly with underfloor heating systems and centralised climate control, guaranteeing consistent performance across all seasons.

The door delivers a thermal coefficient Ud of 0.85 W/m²K (certified by ift Rosenheim), placing it in the high energy performance category and meeting strict local and European requirements. The system relies on a 92 mm profile with an articulated thermal break of 34 mm and quadruple glazing (44.1 triplex / 5mm Satinato / 44.1 Triplex), which significantly reduce heat loss.

The door is constructed from aluminium with a 92 mm profile system and 3 mm leaf thickness, ensuring excellent corrosion resistance and outstanding longevity in urban and coastal environments. The articulated 34 mm thermal break not only improves insulation but also protects the internal structure from water infiltration through triple-point sealing with 3 EPDM gaskets.

Yes, the door can be ordered in custom sizes tailored to your requirements. Maximum dimensions are 1100×2300 mm for standard configurations and up to 1200×2500 mm for single-leaf versions. This sizing flexibility ensures the product adapts to any residential or commercial project, regardless of opening constraints.

The door employs a multi-point sealing system with 3 EPDM gaskets that fit perfectly to the frame and leaf, effectively preventing water and wind ingress. The combination of the 92 mm system profile, articulated thermal break, and quadruple glazing configuration creates a compact barrier that minimizes infiltration. The system is tested and certified to international resistance standards, ensuring durable protection even under extreme conditions.

The door is built with a robust 3 mm aluminium structure and solid core that provides excellent mechanical resistance to brute force. The system allows installation of high-security hardware (concealed hinges, premium locks and closers) compliant with RC2 and RC3 anti-theft classification standards. The 92 mm profile and triple EPDM gaskets ensure secure mounting, while the resistant quadruple glazing provides additional protection against breaking attempts.

The 92 mm system is flexible for installation and adapts to standard and custom frames, as well as masonry types including brick, concrete, or drywall. The profile can be mounted with various fastening systems, allowing precise level and plumb adjustments. We recommend consulting with an installation specialist to assess the opening and ensure proper sealing, especially for non-standard openings that may require profile cuts or extensions.