Aluminium exterior door L402 made to order

Aluminum exterior door L402 with high-performance quadruple glazing and thermally broken profile, delivering exceptional thermal efficiency (Ud 0.85 W/m²K) and contemporary elegance.

The L402 exterior door is a high-performance access solution engineered for contemporary residential and commercial projects demanding superior thermal stability and uncompromised functionality. With an aluminum profile structured at 92 mm system depth, it represents a premium entry door category featuring advanced insulation technology, ideal for variable climates and modern architectural vision.

Construction integrates an extruded aluminum frame (3 mm) with an articulated thermal break of 34 mm, which minimizes heat conductivity while maintaining structural rigidity. The quadruple glazing—manufactured from 44.1 mm laminated triplex with a 5 mm satin interlayer—delivers both thermal performance and controlled transparency, creating a subtle light filter that preserves privacy without sacrificing visual connection. Triple EPDM gaskets ensure airtight closure across seasonal temperature fluctuations, substantially reducing infiltration.

Thermal performance is certified by ift Rosenheim, with a Ud coefficient of 0.85 W/m²K, positioning this door among the most efficient exterior access solutions. This translates to measurable energy savings throughout the building's lifecycle. Mechanical resistance and weather durability are ensured by the articulated profile system and aluminum treatment, which resists oxidation and UV degradation without requiring additional protective coatings.

Flexible dimensioning—up to 1100×2300 mm for multi-leaf configurations and up to 1200×2500 mm for single leaves—accommodates varied facade openings common in contemporary design. The 80 mm frame depth integrates seamlessly into wall insulation systems, eliminating the need for complex compensation blocks. The system supports multiple opening mechanisms (hinged, sliding, pivot), allowing adaptation to specific project requirements.

Recommended for: primary residences and villas with modern aesthetics, thermally isolated terrace access, commercial thresholds with high insulation demand. Pairs effectively with corridor-type fenestration systems, while the anodized or natural aluminum finish complements high-grade laminate, solid parquet, and radiant floor heating installations.

The L402 door achieves a thermal coefficient Ud of 0.85 W/m²K, certified by ift Rosenheim testing, placing it in the high-performance exterior door category. This is achieved through an articulated thermal break of 34 mm in the aluminium profile combined with quadruple glazing (44.1 triplex / 5mm Satinato / 44.1 triplex), significantly reducing heat loss and maintaining interior comfort.

The L402's quadruple glazing consists of four layers: 44.1 triplex / 5mm Satinato / 44.1 triplex. This configuration alternates laminated glass layers with a 5mm intermediate layer (Satinato finish), creating a barrier with superior acoustic properties. The multiple air gaps and triplex glass increase noise attenuation from outside, ideal for homes in urban areas or high-traffic zones.

The L402 is available in two dimensional configurations: standard up to 1100×2300 mm (classic frame and door setup) and single-leaf up to 1200×2500 mm for larger openings. The single-leaf variant uses a central pivot support system and is recommended for generously sized entrances, offering more dramatic visual proportions and superior architectural fluidity.

The L402 has an aluminium profile 3 mm thick, combined with thermal insulation through an articulated thermal break of 34 mm. The frame depth is 80 mm, and the door itself has a total thickness of 92 mm, including the quadruple glazing. This aluminium plus articulated thermal break combination ensures maximum structural strength and durability, even in extreme climate conditions.

The L402 is equipped with three EPDM gaskets around the frame perimeter, forming a multi-point sealing system (three-level seal). EPDM elastomer guarantees flexibility and long-term durability, even under UV exposure and temperature variations. This triple sealing configuration prevents rainwater and cold air infiltration, essential for low-energy buildings and consistent interior comfort.

The L402, with a frame depth of 80 mm and total system depth of 92 mm, is compatible with standard aluminium frames and traditional masonry (brick, concrete) or modern composite materials. Installation involves securing the frame in the masonry opening and ensuring perfect leveling; marginal gaps are filled with polyurethane and sealed with silicone. For pivot openings (single-leaf), consultation with a specialist is recommended to verify lintel resistance and load distribution capacity.