Aluminium exterior door L423 made to order

Aluminium exterior door L423 with high thermal insulation and quadruple glazing. Premium solution for contemporary spaces with Ud coefficient of 0.85 W/m²K.

The L423 door represents a benchmark in the aluminium exterior door category, engineered to meet energy efficiency standards of contemporary construction. The structural profile and 92 mm system depth deliver robust construction, while the 80 mm frame mounting ensures secure integration into modern building envelopes. This door combines aluminium's durability with current thermal performance requirements.

Construction is based on 3 mm aluminium profile reinforced with an articulated 34 mm thermal break that interrupts thermal bridges and improves the system's insulating properties. The quadruple glazing (44.1 triplex / 5mm Satinato / 44.1 Triplex) is a sophisticated configuration combining structural rigidity with superior acoustic and thermal characteristics. Triple-line sealing with high-durability EPDM gaskets provides reliable protection against infiltration and long-term operational reliability.

The thermal coefficient Ud of 0.85 W/m²K (ift Rosenheim certified) positions this door in the high-performance category, significantly contributing to heat loss reduction and interior comfort. The quadruple glazing functions as an essential element of this performance, delivering both thermal and acoustic insulation for spaces requiring sound control. Weather resistance and climate variation tolerance are ensured through system design and surface treatment.

Standard dimensions up to 1100×2300 mm and customization potential to 1200×2500 mm for single-leaf versions allow adaptation to diverse architectural contexts. The system supports single and multiple-leaf configurations, offering flexibility for projects of different scales. The door can be finished in various colours and surface treatments according to interior design requirements.

Recommended for residential and commercial construction with high energy demands, the L423 integrates seamlessly with contemporary and minimalist styles. Its thermal performance makes it ideal for passive or near-zero energy homes. Compatibility with radiant floor heating systems and various flooring treatments transforms it into a versatile solution for multifunctional spaces.

The thermal coefficient Ud is 0.85 W/m²K, certified to ift Rosenheim standards, placing this door in the premium thermal insulation category. This performance delivers significant energy savings over time and optimal indoor comfort, even on extreme temperature days.

The door features an aluminium profile with 3 mm thickness and an articulated thermal break of 34 mm, minimizing thermal bridges. The total leaf thickness is 92 mm, and the system includes quadruple glazing (44.1 triplex + 5 mm Satinato + 44.1 triplex) with multi-point sealing using 3 EPDM gaskets. This is a sophisticated construction balancing structural strength with exceptional thermal performance.

Standard maximum dimensions are 1100×2300 mm, while single leaf configurations can reach 1200×2500 mm. The door can be fully customized to order according to your requirements, adapting to compact spaces or generous openings with more flexible proportions. We recommend consulting with our specialist to determine the optimal configuration based on your specific opening and purpose.

The total system depth is 92 mm with a frame depth of 80 mm, a standard proportion that adapts well to conventional brick, concrete, and modern insulation systems. Installation requires on-site assessment of the opening geometry and frame condition to ensure perfect sealing and correct operation. Our specialists oversee installation to guarantee full compatibility with your existing structure.

The door features 3 multi-point EPDM gaskets ensuring completely hermetic sealing with direct impact on thermal and acoustic performance. These EPDM gaskets resist UV and extreme weather conditions, requiring no special maintenance – annual cleaning with water and mild detergent is sufficient. Proper care of sliding plates and hardware maintains sealing efficiency for decades.

This product is designed as a premium exterior door with exceptional thermal performance, though specific burglary resistance specifications (RC2/RC3) are not documented. For applications with specific security requirements or strict anti-burglary criteria, we recommend direct consultation with our team to identify additional configurations or alternative models matching your security standards.