Thermal insulation
Thermal insulation

Uw as low as 0.74 (Good)

Sound reduction
Sound reduction

up to 34 - 47dB (Moderate to Very Good)

Security
Security

up to -

Construction depth
Construction depth

100mm

Test Certificate Available

bimobject.com

Window information

The Internorm HX 300 delivers expansive, frameless glazing with refined architectural detail. Its slimline glass joints create a nearly seamless transition between large glass panels—filling interiors with natural light and offering uninterrupted views.

For even larger formats, a transom can be discreetly integrated to provide the necessary structural support without disrupting the visual flow. The HX 300 also offers exceptional design flexibility, allowing any Internorm timber-aluminium window (single or double-sash) to be integrated into the composition—enabling tailored, high-performance glazing solutions.

With Uw values of up to 0.74 W/m²K and sound reduction of up to 47 dB, the HX 300 excels in energy efficiency and acoustic comfort. Its robust 100mm frame depth and high-spec timber-aluminium construction ensure strength, stability, and long-term performance—making it ideal for modern architecture that prioritises light, openness, and seamless indoor-outdoor integration.

Features:

  • Material: Timber interior, Aluminium exterior
  • Unique Feature: XL Glazing with modern, slimline glass joints for uninterrupted transitions between large glass surfaces.
  • Scalability: Transom option for even larger glazing areas.
  • Integration: Can integrate Internorm timber-aluminium windows (single or double-sash).
  • Construction Details: Mitre-cut aluminium profiles, uPVC and aluminium brackets, various aluminium colour options, different glass thicknesses, silicone sealing, one-piece fixed frame, options for mullion or glass joint, and integration of windows/doors.

Benefits:

  • Creates a modern and spacious feel with large, uninterrupted glass surfaces.
  • Offers design flexibility with slimline joints and the option for a transom.
  • Allows for seamless integration with other Internorm window styles.
  • Provides good thermal and sound insulation.
  • Offers various customisation options for the aluminium exterior.
  • Features robust construction with quality materials.

Homeowners and architects looking for large, fixed glazing solutions with a modern aesthetic, good performance, and the ability to integrate with other Internorm window systems.

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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