Aluminium exterior door L735 made to order

Premium aluminium exterior door with advanced quadruple glazing and articulated thermal break, engineered for superior insulation and modern minimalist design.

The L735 is a premium exterior aluminium door engineered for residential and commercial projects demanding superior thermal insulation and contemporary minimalist design. Its robust profile and precision engineering position it at the highest tier of entrance systems, delivering both aesthetic refinement and measurable energy performance.

The 3 mm aluminium profile incorporates an articulated thermal break of 34 mm, strategically engineered to minimize heat loss through the frame structure. The total system depth of 92 mm ensures exceptional rigidity and long-term stability. The quadruple glazing configuration—44.1 triplex / 5mm Satinato / 44.1 Triplex—provides European-standard acoustic and thermal insulation, while triple EPDM gasket sealing prevents both air infiltration and water ingress at all pressure points.

Thermal performance is outstanding, with a certified Ud coefficient of 0.85 W/m²K (ift Rosenheim standard), delivering measurable reductions in heating and cooling demand throughout the structure's lifespan. The Satinato interlayer diffuses light discreetly, maintaining interior privacy while preserving transparency. This combination makes the door equally effective in reducing operational energy costs and enhancing occupant comfort.

The door accommodates generous dimensions—up to 1100×2300 mm in standard configuration or 1200×2500 mm for single-leaf applications—offering flexibility in architectural planning. The system integrates seamlessly with swing, sliding, or pivot configurations, adapting to diverse spatial and functional requirements without compromise.

Perfect for primary entrances in contemporary residences, premium commercial lobbies, or threshold transitions in architecturally significant projects. Pairs naturally with polished concrete, natural solid wood, or curated ceramic surfaces, reinforcing the refined, performance-driven character of the complete interior environment.

The L735 achieves Ud = 0.85 W/m²K, a top-tier thermal value for aluminium external doors certified by ift Rosenheim. This exceptional performance stems from the 92 mm door leaf, articulated thermal break of 34 mm, and quadruple glazing (44.1 triplex / 5mm satinato / 44.1 triplex), making it ideal for passive houses and high-efficiency energy renovations.

The main profile is anodised aluminium with 3 mm walls, and the door leaf measures 92 mm thick. The system features an articulated 34 mm thermal break separating the aluminium faces, with a total system depth of 92 mm and frame depth of 80 mm. Quadruple glazing and 3-point EPDM sealing complete the structure for maximum thermal and acoustic performance.

The quadruple glazing consists of 44.1 triplex exterior, 5 mm satinato glass in the middle, and 44.1 triplex interior, creating four glass layers with sealed air gaps. This asymmetrical configuration reduces noise transmission and maximises thermal insulation by absorbing sound at different frequencies and regulating heat transfer. The 3-point EPDM seals prevent water and cold air infiltration, directly contributing to the 0.85 W/m²K thermal coefficient.

Standard dimensions are 1100 × 2300 mm, with single-leaf doors available up to 1200 × 2500 mm for larger openings. Beyond these standard variants, the L735 can be ordered with custom dimensions to suit your project and compatibility with existing frames and masonry. We recommend consulting the sales team to confirm manufacturing options and delivery timelines for non-standard sizes.

The L735, with its 80 mm frame depth, is compatible with standard masonry and requires a 1100 × 2300 mm opening (or custom-ordered dimensions). Installation must be performed by an authorised specialist ensuring multi-point sealing of frames and precise levelling to maintain mechanism function and thermal performance. High-quality polyurethane foam injection and masonry anchor placement are recommended for even load distribution. Final verification of seals and door balance is mandatory before use.

The anodised aluminium profile requires periodic cleaning with running water and mild soap to prevent pollutant deposits. Do not use aggressive chemicals or hard brushes that can damage the anodised finish. For EPDM gaskets, annual inspection and cleaning with mild detergent water are recommended to ensure continuous sealing. Quadruple glazing can be cleaned with standard glass cleaners. Any lubrication of mechanisms (hinges, handles) should be done with silicone-based lubricants, not mineral oil.