Aluminium exterior door L553 made to order

Aluminium L553 exterior door with exceptional thermal efficiency (Ud = 0.85 W/m²K) and quadruple glazing for superior protection. 92 mm system depth featuring articulated thermal break—engineered for high-performance modern architecture.

The L553 is a high-performance aluminium exterior door solution designed for residential and commercial projects that demand superior thermal efficiency and structural durability. The system combines contemporary minimalist elegance with robust engineering that meets European quality standards.

The construction is built on a total system depth of 92 mm, featuring 3 mm aluminium profiles treated for corrosion and weather resistance. An articulated thermal break of 34 mm paired with three EPDM gaskets provides continuous insulation and reliable sealing against extreme temperatures and infiltration. The quadruple glazing (44.1 triplex / 5 mm satin / 44.1 triplex) delivers both acoustic protection and superior thermal insulation performance.

Thermally, the Ud coefficient of 0.85 W/m²K (ift Rosenheim certified) positions this door among high-efficiency products, significantly reducing heat loss and enhancing interior comfort. Triple sealing and the articulated thermal structure eliminate thermal bridges, ensuring consistent performance across all climate conditions.

Available dimensions extend to 1200 × 2500 mm for single leafs and 1100 × 2300 mm for standard configurations, providing flexibility for diverse building typologies. The system accommodates swing options and can be tailored to specific architectural requirements.

This door is recommended for principal entrances in modern villas, passive houses, administrative buildings, and commercial spaces where thermal performance is paramount. It pairs seamlessly with solid wood, polished concrete, or premium tile flooring, complementing both minimalist interiors and modernized classical designs.

The L553 achieves a Ud coefficient of 0.85 W/m²K, certified by ift Rosenheim testing, placing it in the high-performance thermal category. This value reflects the combination of a 34 mm articulated thermal break and quadruple glazing (44.1 triplex / 5mm satiné / 44.1 triplex), ideal for buildings with strict energy efficiency and thermal comfort requirements.

The L553 is constructed from an aluminum profile with 3 mm wall thickness, featuring a total system depth of 92 mm. The structure includes a 34 mm articulated thermal break that separates the outer and inner faces, maximizing thermal insulation efficiency and preventing the cold bridging common in solid structures.

The L553 door is equipped with quadruple glazing in a 44.1 triplex / 5mm satiné / 44.1 triplex configuration, offering superior thermal and acoustic insulation. The four-layer combination with 5 mm central glass (satin finish for aesthetic effect) ensures maximum protection against external noise and impact resistance, essential for exterior doors in high-traffic locations.

The L553 door features 3 EPDM gaskets providing multi-point sealing around the entire perimeter. These gaskets prevent air and water infiltration, contributing to both thermal efficiency and long-term durability. The hardware system and integrated hinges ensure secure closure and smooth operation, meeting exterior door safety standards.

The L553 is available in standard sizes up to 1100×2300 mm, with single leaf options up to 1200×2500 mm. For non-standard dimensions or special configurations (multi-leaf setups, specific frame adaptations), we recommend consulting with our specialist who will evaluate customization options and compatibility with your wall structure.

The aluminum profile of the L553 requires periodic cleaning with neutral water and soap to maintain appearance and prevent deposit buildup. EPDM gaskets should be inspected annually and cleaned to maintain sealing efficiency. Hardware (hinges, handle) should be lightly lubricated and checked for normal wear; in dry or salt-prone climates, more frequent cleaning is recommended to extend the lifespan of the finish and components.