Aluminium exterior door L522 made to order

Aluminium exterior door with exceptional thermal insulation and multipane glazing for maximum protection and energy efficiency. Slim profile with 92 mm system depth and advanced thermal treatment.

The L522 model is a premium exterior access solution that combines thermal efficiency with refined structural design. The 3 mm aluminium profile, coupled with an articulated 34 mm thermal break, ensures structural stability and significant heat loss reduction. The system spans a total depth of 92 mm, with a deep 80 mm frame providing a solid foundation for installation and long-term performance.

Glazing is quadruple configuration—44.1 mm triplex outer layers with 5 mm satin glass interlayer and 44.1 mm triplex inner layer—delivering superior acoustic insulation and effective thermal control. Three-layer EPDM gaskets seal all joints precisely, preventing water infiltration and air leakage across all weather conditions. This detailed construction is certified to international standards, with a Ud coefficient of 0.85 W/m²K (ift Rosenheim tested).

The thermal performance of this model positions it in the premium segment of exterior doors. Its ability to maintain interior temperature stability and attenuate external noise makes it ideal for buildings demanding advanced comfort and long-term durability. Robust construction and German engineering in design ensure smooth, secure operation for decades.

The unit can be configured in swing or modern sliding systems, allowing adaptation to diverse architectural solutions. Standard dimensions accommodate up to 1100×2300 mm multi-leaf configurations, while single leaves can reach 1200×2500 mm. Dimensional flexibility and customization options suit both new construction and high-end renovations.

Anodized aluminium and premium finishing recommend this model for main entrances, commercial spaces, and prestige residences prioritizing thermal insulation, acoustic privacy, and proven longevity. Full compatibility with contemporary hardware systems addresses every functional requirement at the boundary between interior and exterior spaces.

The Ud coefficient is 0.85 W/m²K, certified by ift Rosenheim — one of the best ratings for aluminium exterior doors. This is achieved through the articulated 34 mm thermal break and quadruple glazing with triple layers, which dramatically reduces heat loss. You'll notice the difference in your heating bills within the first winter season.

The quadruple glazing is composed of: 44.1 mm external triplex — 5 mm Satinato glass in the middle — 44.1 mm internal triplex. This configuration provides superior sound insulation (reduces noise by 35–40 dB), UV protection and privacy through the Satinato finish, plus excellent mechanical strength. Perfect for homes in noisy areas or harsh climates.

Standard dimensions go up to 1100 × 2300 mm from stock, and for a single-leaf installation the limit is 1200 × 2500 mm. For custom sizes beyond these limits, our showroom team evaluates each request individually and can commission bespoke solutions — with extended lead times. We recommend a free consultation with our specialist to determine the best option for your project.

The L522 has a system depth of 92 mm and frame depth of 80 mm, which fits standard masonry openings without special modifications. Installation uses Fischer-type anchors in pre-drilled holes. For the multi-point EPDM seal to work properly, the frame must be perfectly plumb and square — gaps are sealed with polyurethane foam. Professional installation is recommended to ensure thermal and acoustic performance.

The L522 profiles are aluminium with 3 mm thickness, providing extreme durability and light weight. The leaf core is solid aluminium with thermal inserts for structural rigidity. Finishes are available in epoxy paint, veneer, or laminate — choose based on preference and location (UV exposure). Regular cleaning with water and neutral detergent, plus an aluminium protectant once yearly (especially in coastal areas), keeps it looking new. Avoid abrasives and vinegar.

The exterior door L522 is equipped with certified hardware and a multi-point sealing system (3 EPDM gaskets). For complete protection, we recommend adding an RC2 or RC3 certified lock (burglar-resistant), depending on your location's risk level. Hinges are concealed and stainless, and the frame is designed to withstand impact forces. ift Rosenheim certification confirms compliance with European security and performance standards.