Aluminium exterior door L931 made to order

Premium exterior aluminium door with 92 mm profile depth and exceptional thermal performance (Ud 0.85 W/m²K). Advanced system featuring quadruple glazing and triple EPDM sealing.

The L931 exterior door represents a premium aluminium solution engineered to deliver superior performance across all climates. The 92 mm profile depth combined with an 80 mm frame provides exceptional rigidity and durability, setting the standard for high-performance exterior systems. Standard configurations accommodate up to 1200×2500 mm single-leaf dimensions, offering maximum flexibility for contemporary architectural projects.

Construction employs 3 mm aluminium thickness paired with an articulated 34 mm thermal break—a sophisticated design feature that interrupts thermal bridges and minimizes heat loss while maintaining interior comfort. The quadruple glazing system (44.1 triplex / 5 mm Satinato / 44.1 triplex) delivers outstanding thermal and acoustic insulation. Three EPDM gaskets ensure perfect air-tightness, protecting interiors from water infiltration, wind pressure, and environmental contaminants.

Thermal performance is expressed through a Ud coefficient of 0.85 W/m²K (certified by ift Rosenheim), positioning this door among the most efficient exterior systems available. This value reflects the door's capacity to retain indoor heat during winter months and reject solar gain in summer, significantly reducing energy consumption. Laboratory testing guarantees reliability and compliance with Europe's most stringent standards.

The refined minimalist design and clean profile lines adapt seamlessly to contemporary architectural styles—from Scandinavian minimalism to energy-conscious residential construction. The system supports dimensional customization and various opening configurations, responding precisely to project-specific requirements.

This is the ideal solution for modern homes, passive house projects, and renovations where thermal efficiency and longevity are paramount. It integrates flawlessly with matching window packages, creating visual coherence and uniform thermal-hygrometric performance across the entire façade.

The Ud coefficient of 0.85 W/m²K (certified by ift Rosenheim) places this door in class A energy efficiency — top-tier performance for exterior doors. The 92 mm system depth, combined with a 34 mm articulated thermal break and triple EPDM sealing, ensures multi-point airtightness that minimizes heat loss and protects your interior from drafts.

The quadruple system — 44.1 triplex / 5mm Satinato / 44.1 triplex — combines three glass layers with 44.1 interlayer for maximum impact resistance and safety, plus satin glass for privacy. This configuration delivers superior thermal insulation and silent acoustics, ideal for main entrances in busy areas.

Standard maximum dimensions are 1100 × 2300 mm, and for a single leaf you can reach up to 1200 × 2500 mm. Any deviation from these sizes, including adjustments for different wall thicknesses or non-standard openings, requires custom manufacturing — built in our partner workshop with precision tolerances.

The frame depth is 80 mm and installs directly into the wall opening with expandable sealing and mechanical fastening. Compatibility with your existing frame depends on wall thickness and current setup — we recommend precise measurement and consultation with our installation specialist before ordering to avoid additional costs.

Both the frame and door leaf are aluminum, with 3 mm sheet thickness — durable, easy to clean, and weather-resistant without warping. The total leaf thickness is 92 mm, containing internal insulation for thermal performance. Maintenance is straightforward: regular cleaning with water and mild soap; avoid harsh solvents.

This product does not have explicit RC2/RC3 burglary-resistance ratings in the available technical data. Recommendation: for maximum security on exterior doors, request detailed information about the lock mechanism, hidden hinge system, and multi-point locking — these security features can be specified at order to meet your protection requirements.