Aluminium exterior door L381 made to order

L381 aluminium entrance door with 92 mm profile depth and exceptional thermal performance (Ud 0.85 W/m²K). Triple-sealed quadruple glazing engineered for maximum weather resistance and energy efficiency.

The L381 is a premium aluminium entrance door engineered for contemporary homes demanding superior performance and architectural clarity without compromise. The 92 mm system depth and articulated 34 mm thermal break position this model at the top performance tier for high-specification residential applications.

The 3 mm aluminium profile delivers structural rigidity and dimensional stability across decades, while protecting the four-layer glazing from thermal shock and weathering. The quadruple glazing system—44.1 triplex / 5 mm Satinato / 44.1 triplex—achieves exceptional thermal and acoustic separation, reinforced by triple EPDM gaskets that maintain watertight and airtight seals under sustained wind and rain loads. This compact 92 mm construction preserves elegant facade proportions.

With a thermal transmittance value (Ud) of 0.85 W/m²K (ift Rosenheim certified), the L381 meets the highest energy efficiency standards, substantially reducing annual heating losses and operational costs. Durability is assured by the triple-seal system and profile geometry, which actively sheds water and resists pressure from extreme weather without degradation.

Standard apertures to 1100×2300 mm or extended single-leaf dimensions up to 1200×2500 mm adapt seamlessly to existing openings. Satinato glazing options provide subtle visual privacy while preserving natural light transmission—a preferred choice for principal entries and south-facing facades.

L381 suits premium residential projects, energy-certified new builds, heritage renovations requiring modern performance, and selective commercial applications where aesthetic refinement and technical excellence converge.

The L381 achieves a thermal coefficient Ud of 0.85 W/m²K, certified by ift Rosenheim, placing it in the highest insulation category for exterior doors. This is achieved through the combination of its 92 mm deep profile, articulated thermal break of 34 mm, and quadruple glazing system, delivering exceptional climate control and significant heating cost reduction.

The L381 is constructed with 3 mm thick aluminium profile combined with an articulated thermal break of 34 mm that not only enhances insulation but also shields the aluminium from temperature fluctuations that accelerate corrosion. The profile is treated to European standards, delivering superior resistance in extreme climatic conditions, including saline or industrial environments.

The L381 offers two dimensional variants: 1100×2300 mm for standard configuration and up to 1200×2500 mm for single leaf configurations. Both can be customised to order based on your specific installation requirements, ensuring perfect integration with any existing masonry or frame profiles.

The door features three multi-point EPDM gaskets providing airtight sealing across the entire perimeter. The three-layer inert rubber system creates a continuous barrier that repels water and prevents air infiltration, maintaining both thermal and acoustic performance even in extreme wind and driving rain conditions.

The L381 installs with a 80 mm frame profile depth, adapted for standard wall thicknesses (12-15 cm). Compatibility extends to aluminium, timber, or MDF frames, with or without additional insulation, and the installation professional ensures secure fixing and multi-point sealing across the entire contact surface. The pivot or concealed hinge system enables rapid, precision fitting.

The L381 uses quadruple glazing with complex stratification: 44.1 triplex + 5 mm Satinato + 44.1 triplex, ensuring optimal thermal insulation and significant acoustic attenuation. Each layer serves a specific function – triplex provides security against penetration and reduces sound transmission, while the 5 mm Satinato space (treated glass) acts as an insulating air cavity, limiting both sound vibration and heat transfer.