Aluminium exterior door L525 made to order

Aluminium exterior door L525 with slim profile and superior thermal performance. Quadruple glazing and triple EPDM sealing for maximum protection in demanding climates.

The L525 is a premium aluminium access solution designed for contemporary buildings requiring top-level energy efficiency. With a total system depth of 92 mm and frame profile of 80 mm, the system delivers elegant proportions while integrating advanced thermal insulation technology, suited for rigorous climates and demanding architectural requirements.

The 3 mm aluminium profile combines structural resilience with visual refinement. The system features an articulated 34 mm thermal break that interrupts cold transfer and significantly reduces heat loss. The quadruple glazing (44.1 triplex / 5mm Satinato / 44.1 triplex) provides exceptional acoustic and thermal insulation, supported by three independent EPDM gaskets that ensure complete air and water tightness.

The thermal coefficient Ud of 0.85 W/m²K (certified by ift Rosenheim) positions this door in the superior segment of thermal performance, substantially reducing heating and cooling energy consumption. The robust construction resists temperature variations and mechanical stress, guaranteeing long-term durability even under direct exposure to severe weather conditions.

The L525 can be manufactured in standard dimensions up to 1100×2300 mm or in single-leaf variants up to 1200×2500 mm, offering flexibility for projects of varying scales. The system integrates seamlessly with various opening mechanisms and adapts to both primary modern entrances and secondary façade access points, complementing minimalist design and contemporary architectural lines.

This is a door for clients who value technical performance, durability, and clean aesthetics without compromise in insulation or protection. Ideal for luxury residential projects, offices, and premium commercial developments in regions with stringent climatic demands.

The thermal coefficient Ud of 0.85 W/m²K (ift Rosenheim certified) delivers premium insulation, combining a 34 mm articulated thermal break with quadruple glazing (44.1 triplex + 5mm Satinato). This ensures minimal heat loss and superior comfort year-round.

The aluminium profile is 3 mm thick, integrated into the 92 mm leaf structure, providing exceptional rigidity and resistance without unnecessary weight. This design optimisation ensures reliable long-term performance even in harsh weather conditions.

Three EPDM gaskets create a continuous multi-point seal around the entire door perimeter, preventing water, wind, and moisture infiltration. This maintains consistent internal temperature and air pressure. For an exterior door, this protective barrier is essential for lasting comfort, energy efficiency, and structural protection.

Standard dimensions reach 1100×2300 mm, with single-leaf configurations available up to 1200×2500 mm. Every project can be tailored to your architectural needs. We recommend consulting our showroom team to discuss customisation options and compatibility with existing frames.

Quadruple glazing (44.1 triplex + 5mm Satinato on both sides) combines superior thermal insulation with acoustic protection. The Satinato glass provides visual privacy, while triplex construction adds safety in case of breakage. This configuration ensures both acoustic comfort and maximum heat retention.

The frame has a depth of 80 mm and is compatible with standard masonry (brick, concrete, stone). Installation requires levelling and squaring checks to ensure proper hinge operation and seal integrity. Professional installation is mandatory for proper warranty coverage and optimal performance.