Aluminium exterior door L372 made to order

Aluminium exterior door L372 profile with superior thermal performance and quadruple glazing for maximum insulation. Premium solution for high-efficiency building standards.

The L372 aluminium door represents the standard of excellence for contemporary building access, engineered to meet Europe's most stringent energy performance requirements. The 92 mm total system depth combined with 3 mm aluminium leaf thickness ensures structural rigidity and longevity suitable for premium residential and commercial applications.

Material excellence is built on advanced thermal technology: the articulated 34 mm thermal break significantly reduces heat transfer, while the triple EPDM gasket sealing system provides superior protection against water and air infiltration. The quadruple glazing—44.1 mm transparent triplex, 5 mm satin interlayer, and 44.1 mm triplex again—delivers simultaneous acoustic and thermal insulation, ideal for urban or climatically demanding locations.

The thermal transmission coefficient Ud of 0.85 W/m²K (certified by ift Rosenheim) positions this solution among the most efficient in its category, directly impacting energy consumption and interior comfort throughout the year. The 80 mm frame depth integrates seamlessly into diverse construction types, while the 92 mm leaf thickness ensures robust visual presence and superior structural resistance.

Standard sizing accommodates most design requirements up to 1100×2300 mm, with customization available for single-leaf configurations up to 1200×2500 mm, enabling personalized architectural solutions. The modular system is compatible with various opening mechanisms and adapts to project-specific access and functionality requirements.

Recommended applications: principal entries to luxury residences, premium office buildings, hotels, and institutions with high comfort standards. Aluminium, combined with superior thermal and acoustic performance, transforms this door into an architectural statement, reflecting attention to detail and commitment to long-term quality investment.

The L372 door achieves a thermal coefficient of 0.85 W/m²K, certified by ift Rosenheim — a top-tier value for aluminium exterior doors. Superior thermal insulation is ensured by the quadruple glazing (44.1 triplex / 5 mm Satinato / 44.1 triplex) combined with a 34 mm articulated thermal break in the profile. This configuration places the door at reference-level performance for buildings with high energy requirements, in line with current European standards.

The L372 door features a 3 mm thick aluminium core, framed within an 80 mm deep profile for maximum structural stability. The total system depth is 92 mm and includes an articulated thermal break that prevents thermal bridging. The finish is protected through carefully selected glazing panels and aluminium treatment — the matte Satinato finish on the inner face delivers refined and durable aesthetics.

The L372 door comes in standard dimensions of 1100×2300 mm for typical openings, but can be custom-made up to 1200×2500 mm for single-leaf configurations. This flexibility allows adaptation to any masonry typology and opening, whether in compact or voluminous spaces. Customization to specific measurements is completed while maintaining full certified thermal and structural performance.

The L372 door's sealing system relies on 3 EPDM gaskets arranged in multi-point configuration, creating a continuous barrier against water and air. The gaskets are strategically positioned in the channels of the 80 mm aluminium profile, ensuring uniform adherence to the frame. This triple sealing arrangement is designed for buildings with high wind and rain exposure, providing long-term durability and eliminating the risk of internal condensation.

The L372 door is installed with an 80 mm deep profile that fixes into frame channels and is secured with masonry anchors. Compatibility is universal — it works with standard frames in brick, concrete, natural stone and with insulation systems (expanded polystyrene, mineral wool). The profile allows 10-15 mm adjustment flexibility vertically, essential for uneven masonry. Installation includes perimeter sealing with structural-grade silicone to complete the protection system.

Maintenance of the L372 door is minimal — it requires periodic cleaning of EPDM gaskets with water and neutral detergent to preserve elasticity over time. Aluminium profiles are cleaned with water and microfibre cloths, avoiding abrasive agents that could affect the finish. The quadruple glazing (matte Satinato) is washed with standard glass solutions — preventing periodic condensation and avoiding forcing during opening/closing extends the lifespan of the thermo-hydraulic system.