Aluminium exterior door L251 made to order

Aluminum exterior door L251 with exceptional thermal insulation and quadruple glazing for superior protection. Premium 92 mm profile combines stability with contemporary elegance.

The L251 model represents a premium solution for exterior access doors demanding top-tier energy performance and lasting durability. Aluminum construction merges industrial-modern profile aesthetics with Greek engineering reliability, featuring a 92 mm total system depth that ensures structural stability and efficient thermal insulation across all climates.

The profile design combines 3 mm aluminum thickness with an articulated thermal break of 34 mm — a technical solution that separates exterior and interior layers, blocking heat transfer effectively. The frame reaches 80 mm in depth while the complete door leaf measures 92 mm, providing robust sealing and reliable swing behavior over decades. Sealing relies on three high-density EPDM gaskets that withstand extreme thermal cycles without degradation, maintaining performance season after season.

Glazing is quadruple configuration — a rare specification in entry door segments — composed of 44.1 mm triplex glass on the exterior, a 5 mm satinized glass buffer in the center, and 44.1 mm triplex on the interior. This stratification not only reduces thermal loss to Ud = 0.85 W/m²K (certified by ift Rosenheim), but also delivers substantial acoustic insulation and forced-impact resistance. Independent certification confirms compliance with Europe's strictest standards.

L251 accommodates dimensions up to 1,100×2,300 mm in standard configurations and 1,200×2,500 mm for single-leaf models, versatility suited to contemporary facades, structural renovations, and projects with strong architectural demands. Finishing integrates seamlessly with anodized aluminum accents or metallic lacquers, complementing both minimalist interiors and exteriors with powerful geometric identity.

The L251 achieves a Ud coefficient of 0.85 W/m²K (ift Rosenheim certified), placing it in the ultra-high insulation category. This exceptional performance comes from the articulated thermal break of 34 mm, the 92 mm profile depth, and the specially engineered quadruple glazing. You'll experience significantly reduced heat loss and consistent comfort even during harsh winters.

Yes, the L251 can be custom-ordered up to maximum dimensions of 1200×2500 mm for single-leaf configuration. Each bespoke order is manufactured to your exact specifications while maintaining full structural integrity and thermal performance. Our team carefully reviews proportions and installation requirements to ensure perfect fit.

The L251 has a total thickness of 92 mm (leaf) with a frame profile depth of 80 mm, making it compatible with both standard and modern installations. The aluminum wall thickness is 3 mm, ensuring durability combined with lightweight performance. Before installation, we recommend checking your existing frame—the 92 mm depth fits most contemporary jambs, though minor adjustments may be needed for older homes.

The L251 features 3 strategically positioned EPDM gaskets running along the full perimeter to create a multi-point seal against water, wind, and air infiltration. Each gasket compresses slightly upon closure, sealing tiny gaps that could allow weather penetration. This system is vital for exterior doors because it prevents structural moisture damage, maintains energy efficiency, and eliminates drafts.

The L251 is fitted with quadruple glazing: 44.1 triplex / 5mm Satinato / 44.1 triplex—a premium configuration delivering exceptional thermal and acoustic insulation. The triplex layers (three glass sheets bonded with polyvinyl film) absorb vibrations and reduce sound transmission, while the central 5 mm Satinato glass creates a thermal break. The result: a quiet entrance and a warmer home regardless of weather conditions.

Installing the L251 requires careful alignment of the existing frame, as the 92 mm profile must sit perfectly flush with the wall and structure. We recommend pre-installation verification of frame dimensions and condition; for older homes, minor frame depth adjustments may be necessary. While the detailed installation process depends on your specific home configuration, our team provides complete technical documentation and is available for professional guidance before installation.