Thermal insulation
Thermal insulation

Ud as low as 0.80 W/(m2K)

Sound reduction
Sound reduction

up to 32dB

Security
Security

up to RC2

Locking
Locking

Multi-locking

Construction depth
Construction depth

93mm

Test Certificate Available

bimobject.com

Door Information

The AT 520 aluminium front door combines clean exterior geometry with elegant interior detailing. Its square-edged, flush exterior design delivers a bold, modern impression, while the interior features a subtle profiled finish that adds warmth and sophistication.

Built for long-term performance, the AT 520 includes an insulating foam core for excellent thermal stability and comfort. The smooth sash rebate design allows for easy maintenance and cleaning—ideal for busy households or high-traffic entrances.

With a standard 5-point locking system and security options up to RC2, the AT 520 offers reliable protection alongside architectural appeal.

Features:

  • Material: Aluminium
  • Design: Square edged design with a flush door sash on the outside and profiled detail on the inside.
  • Insulation: Insulating foam core for excellent climatic stability.
  • Maintenance: Easy care and cleaning thanks to smooth sash rebate.
  • Security: Standard 5-point locking for maximum security.

Benefits:

  • Distinctive and stylish design: Offers a unique aesthetic with a flush exterior and detailed interior.
  • Excellent climatic stability: Resists warping and damage from temperature fluctuations.
  • Easy to maintain: Smooth sash rebate simplifies cleaning.
  • High security: 5-point locking system provides robust protection.
  • Good thermal insulation: Contributes to energy efficiency.
  • Offers sound insulation: Helps to reduce external noise.
  • Durable construction: Aluminium ensures longevity and robustness.

Ideal for homeowners and architects looking for an aluminium front door that combines a flush exterior with a refined, profiled interior. The AT 520 appeals to those who value strong security, low-maintenance design, and reliable thermal performance. With optional smart access via I-tec Open, it’s also well-suited to homes embracing modern technology.

Related Downloads

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Recent Work

Working closely with architects, builders, and homeowners, we’ve delivered systems that combine thermal efficiency, modern aesthetics, and long-term durability—across private residences, sustainable developments, and architect-led designs.

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Build It Live South East

Yes, we recommend booking an appointment to ensure personalised service and availability. You can schedule your visit by filling out our contact form or emailing us at [email protected].

During your visit, our team will guide you through our range of premium window and door systems. We’ll answer your questions, help you explore customisation options, and assist in finding the perfect solution for your project.

Absolutely! Bringing your project plans or drawings can help our team better understand your needs and provide tailored recommendations.

Our knowledgeable team is here to help. Whether you need advice on materials, styles, or energy efficiency, we’ll guide you through the process and ensure you make an informed decision.

Ready to transform your home?

Our experienced team provides bespoke window designs and precision installations, ensuring every detail complements your architectural style.

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