Aluminium exterior door L517 made to order

Aluminium exterior door L517 with superior thermal insulation and quadruple glazing for maximum protection. 92mm system depth, engineered for contemporary entrances.

The L517 positions itself in the premium segment of aluminium exterior doors, delivering a robust and energy-efficient solution for principal entrances. The articulated thermal break of 34mm ensures effective thermal separation, maintaining interior comfort across all seasons. The total system depth of 92mm reflects a solid construction capable of withstanding external conditions with lasting durability.

The aluminium profile, with 3mm thickness, is engineered to resist corrosion and weathering over extended periods. The quadruple glazing — a rare configuration in the exterior door market — comprises 44.1 triplex on both faces, with a 5mm Satinato glass layer positioned centrally, delivering exceptional acoustic insulation and precise light control. Triple EPDM seals create a perfect airtight seal, eliminating cold draughts and thermal loss.

Thermal performance is certified by ift Rosenheim with a Ud coefficient of 0.85 W/m²K — a remarkable value that places L517 in the high-efficiency category. This translates directly to significant heating cost reduction and measurable interior comfort gains. Acoustic insulation is equally distinctive, making this door ideal for properties in urban settings or high-traffic areas.

The L517 accommodates generous dimensions — up to 1200×2500mm for single leaves — offering complete design freedom and the possibility to create striking, light-flooded entrances. Customization flexibility in system depth and glazing configuration allows tailoring to specific architectural requirements.

Recommended for principal entrances in high-end residential properties, contemporary villas, and premium commercial buildings. Pairs seamlessly with contemporary, minimalist, or industrial interiors. When combined with luxury flooring — natural stone, polished marble, or premium parquet — it amplifies the overall perception of quality and sophistication.

The thermal coefficient Ud of 0.85 W/m²K (ift Rosenheim certified) places this door in the highest energy efficiency class, comparable to passive house windows. The articulated thermal break of 34 mm combined with quadruple glazing 44.1 triplex ensures minimal heat loss, translating to savings of 15-20% on heating costs compared to standard solutions.

With a system depth of 92 mm and frame depth of 80 mm, the door fits standard European installation requirements in conventional masonry (brick, concrete) and reinforced drywall constructions. Installation requires a prepared opening with tolerance of ±10 mm and ensures multi-point sealing by anchoring at minimum 3 levels with expansion screws. We recommend applying an acrylic sealing tape around the frame to prevent water infiltration.

The quadruple glazing system 44.1 triplex / 5mm Satinato / 44.1 triplex provides superior acoustic insulation, reducing external noise by 30-35 dB, creating a quiet and comfortable interior environment even in busy urban areas. The mid-layer Satinato glass not only provides thermal and acoustic insulation but also offers elegant visual privacy without compromising light transmission.

Yes, this door can be custom-ordered to your specifications. Standard dimensions are up to 1100×2300 mm, but single-leaf configurations can reach maximum dimensions of 1200×2500 mm, offering flexibility for modern architectural projects with generous openings. For dimensions exceeding these limits, we recommend dual-leaf configurations or solutions with intermediate mullions to maintain thermal and acoustic performance.

The L517 door is designed with robust 3 mm aluminum construction and a 92 mm leaf thickness, ensuring high mechanical resistance to impact force. The multi-point sealing system with 3 EPDM gaskets and superior quality hardware guarantees secure and tight closure. For high-security applications (RC2 or RC3 class), we recommend specifying certified cylinder locks and safety bolts upon order, transforming this door into an effective barrier against forced entry.

The aluminum and glass are easily cleaned with warm water and neutral detergent, followed by rinsing with running water and drying with a soft cloth. The aluminum finish (typically anodized or powder-coated) is corrosion-resistant and requires no special treatments—just basic monthly hygiene. EPDM gaskets should be inspected annually and, if damaged, can be easily replaced. Hardware should be lightly lubricated once a year with a neutral oil to ensure smooth operation of hinges and closure mechanisms.