Aluminium exterior door L553-1 made to order

L553-1 exterior aluminium door with 80 mm recessed frame profile and advanced thermal insulation Ud 0.85 W/m²K. Quadruple glazing and triple-layer gasket sealing for superior energy performance.

The L553-1 is a premium exterior door solution in aluminium, engineered with a 92 mm total system depth and 80 mm frame recess. This door class is designed for buildings with high thermal insulation demands and contemporary architectural presence, delivering a refined yet substantial entry statement.

Construction combines 3 mm aluminium thickness with an advanced articulated thermal break of 34 mm, effectively blocking heat transfer between interior and exterior zones. The triple-layer EPDM gasket sealing system creates a continuous barrier against air and water infiltration, even under severe weather conditions. The door leaf reaches 92 mm thickness, contributing to structural rigidity and acoustic damping performance.

Thermal performance is certified at Ud 0.85 W/m²K (ift Rosenheim standard), positioning this door in the superior energy category comparable to passive and climate-conscious building standards. Quadruple glazing — 44.1 triplex / 5mm Satinato / 44.1 triplex — delivers exceptional thermal and acoustic insulation while maintaining optical clarity with integrated solar control and privacy treatments. This configuration ensures effective heat retention and substantial external noise reduction.

L553-1 accommodates standard dimensions up to 1100×2300 mm, and single-leaf versions extend to 1200×2500 mm, enabling integration into projects with diverse architectural proportions. The aluminium profile supports varied finishes and aesthetic customization, adaptable to most contemporary and classical design concepts.

This door is recommended for premium residential projects, commercial buildings with elevated energy standards, and renovation work in moderate to cold climates. It integrates harmoniously alongside solid wood, laminate or natural floor finishes, creating seamless indoor-outdoor transitions. The robust, certified system guarantees long-term durability and minimal maintenance overhead.

The L553-1 door achieves a thermal coefficient of 0.85 W/m²K, certified by ift Rosenheim institute — an excellent value for an aluminium exterior door. This performance stems from the articulated 34 mm thermal break combined with quadruple glazing, which minimizes heat loss and reduces energy consumption. The 80 mm profile depth and three-level sealing ensure consistent thermal insulation across all climate conditions.

The L553-1 uses a 3 mm thick aluminium profile with insulated core and quadruple thermal glazing (44.1 triplex / 5 mm satin glass / 44.1 triplex). The total system depth is 92 mm, with the frame profile measuring 80 mm. This hybrid construction delivers structural rigidity, thermal efficiency, and a contemporary appearance typical of premium segment products.

The L553-1 features a three-level sealing system with EPDM gaskets, providing effective protection against water and wind at high pressure levels. The multi-point sealing system works through continuous contact between gaskets and frame/leaf, creating an impermeable barrier. This configuration is standard for high-performance exterior doors and protects the interior against extreme weather conditions.

The L553-1 offers standard dimensions up to 1100×2300 mm, and for single-leaf configurations, it can reach 1200×2500 mm. If your masonry requires different proportions, dimensions can be customized to order, with adjustment of the frame and mounting system. We recommend reviewing exact opening plans before confirming your order.

The L553-1 is installed by securing it to the 80 mm aluminium frame, which is embedded in the masonry. The system is compatible with standard frames and mounting variants for interior or exterior wall placement, depending on wall thickness and insulation depth. After installation, the frame is sealed with polyurethane foam and appropriate internal finishes. Installation requires precise measurements and tolerance compliance to ensure proper sealing and operation.

The aluminium profile requires periodic cleaning with lukewarm water and neutral detergent to remove dirt and deposits. EPDM gaskets should be inspected regularly to ensure they remain flexible and sealed; if damaged, they can be replaced. The finish (painted, veneered, or laminated) must be protected from prolonged sun exposure and extreme conditions. Proper maintenance significantly extends the door's lifespan and maintains thermal performance.