Aluminium exterior door L750 made to order

Aluminum exterior door L750 system with 92 mm depth, advanced thermal insulation Ud 0.85 W/m²K, and quadruple glazing. Premium choice for contemporary spaces with exceptional energy efficiency.

The L750 exterior door positions itself as a reference solution in the premium segment of aluminum doors. Engineered with technical rigor, it combines modern aesthetics with superior thermal performance. The 92 mm total depth system delivers the structural capacity needed for efficient insulation, making it ideal for residential and commercial projects with elevated energy efficiency requirements.

The aluminum profile, engineered with 3 mm thickness and an articulated 34 mm thermal break, ensures exceptional durability and long-term dimensional stability. The 80 mm frame depth and 92 mm leaf support a robust construction capable of bearing high-performance glazing. Triple EPDM gaskets distributed across three sealing lines guarantee complete airtightness and protection against air and water infiltration.

The quadruple glazing system — featuring 44.1 mm triplex layers on both sides and a 5 mm Satinato interior pane — delivers a thermal transmittance coefficient Ud of 0.85 W/m²K, certified by ift Rosenheim. This performance places the door among the most energy-efficient available, significantly reducing heat loss and supporting interior comfort even under extreme climatic conditions.

Standard dimensions up to 1100×2300 mm cover typical applications, with custom single-leaf execution available up to 1200×2500 mm for specialized installations. Dimensional flexibility permits integration into diverse architectural projects, from renovations to new builds with specific requirements.

L750 is recommended for contemporary residences, offices with generous visibility, and commercial spaces requiring optimal thermal insulation and premium appearance. It pairs beautifully with natural hardwood floors, polished concrete, or contemporary tile, completing a cohesive high-end design narrative.

The Ud value of 0.85 W/m²K (ift Rosenheim certified) places this door in premium class — just 15% of the heat loss of a conventional door. The L750 profiles with 34 mm articulated thermal break and quadruple glazing (triplex + Satinato glass + triplex) create exceptional insulation that cuts energy consumption and eliminates cold drafts.

The 3 EPDM gaskets are strategically placed on the profile channel — on the core, outer and inner frame — creating a multiplied barrier against water and dust infiltration. This multi-point configuration is crucial for exterior doors exposed to wind and rain: water stops direct water toward drainage, and elastic gaskets compress slightly when closing to seal completely.

Standard range is 1100×2300 mm for classic configurations, but the L750 system allows customization up to 1200×2500 mm on a single leaf. For wider openings, dual-leaf or pivot configurations are recommended to maintain proportions and thermal performance. Our consultants calculate exact dimensions according to your masonry and opening preferences.

The 92 mm leaf consists of 3 mm aluminum profile, industrially extruded and treated for durability. Aluminum is inert to water and UV, does not warp, and requires no periodic painting. The anodized or RAL color finish ensures permanent protection against corrosion and maintains appearance without visible degradation even after 20+ years of weather exposure.

The L750 system accepts security hardware at RC2/RC3 level (burglary resistance), per EN 1627 standard. The robust structure with 3 mm profile and multi-point operation allows integration of electric Yale locks, RFID unlock sets, or contact alarm systems. We recommend consulting with a specialist installer to select the correct mechanisms and anti-intrusion bars according to your security needs.

The frame profile is anchored into masonry with foam gaskets at 3-4 points depending on opening width — the process takes 2-4 hours. The masonry must be flat (±10 mm on 2 m) and clean of construction dust and debris. After anchoring and foam cure (24h), the leaf is mounted on hinges and height and level adjusted. We provide detailed documentation and recommend installation by an authorized technician to ensure thermal and security performance.