Thermal insulation
Thermal insulation

Uw as low as 0.64 (Excellent)

Sound reduction
Sound reduction

up to up to 33 - 43dB (Moderate to Good)

Security
Security

up to RC 2

Construction depth
Construction depth

203mm

Test Certificate Available

bimobject.com

The KS 430 creates a smooth transition between interior and exterior spaces, with a low threshold design that allows for barrier-free access—ideal for enhanced comfort, accessibility, and modern open-plan living.

Toughened safety glass comes as standard, offering added protection in the event of breakage. An integrated soft-close mechanism gently slows the door before closing, preventing slamming and extending the product’s lifespan. For ultimate convenience, the optional Comfort Drive enables electric opening and closing at the push of a button.

Personalise your space with I-tec Decor, Internorm’s digital printing technology, offering a variety of interior finish options for a customised look.

With Uw values of up to 0.64 W/m²K, sound insulation up to 43 dB, and security ratings up to RC2, the KS 430 offers reliable energy efficiency, safety, and style in one seamless sliding door system.

Features:

  • Material: uPVC interior, Aluminium exterior
  • Design: Perfect link between inside and outside.
  • Accessibility: Low threshold for comfortable, barrier-free passage.
  • Safety: Standard toughened safety glass panes.
  • Customisation: I-tec Decor digital printing technology for interior design options.
  • Optional Feature: Comfort Drive - electric drive for convenient opening and closing.
  • Compatibility: Can be combined with all Internorm uPVC-aluminium window systems across the same design style for a consistent aesthetic.
  • Construction Schemes: Various schemes available.

Benefits:

  • Creates a seamless transition between indoor and outdoor spaces.
  • Offers barrier-free access with the low threshold.
  • Provides safety with toughened safety glass.
  • Ensures smooth operation with the soft closure.
  • Allows for interior design customisation with I-tec Decor.
  • Offers good thermal and sound insulation.
  • Provides security features for peace of mind.
  • Allows for design coordination with other Internorm windows.

Homeowners looking for a high-quality lift and slide door that provides easy access, safety features, customisation options, and good performance. The barrier-free aspect will appeal to those with accessibility needs or a preference for universal design.

  • Spec PDF
  • Surfaces & Colours
  • Handle Options
  • Obscure Glass Options

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.

Expert Advice & Insights

Explore detailed material comparisons, tailored installation advice,
and practical maintenance tips to keep your windows and doors performing at their best.

Solar Film for Low-E Windows: UK Overheating Solutions

Solar Film for Low-E Windows: UK Overheating Solutions

Overheating with passive low-E windows in the UK? Discover compatible window film options and expert advice on solar control glazing for ultimate comfort.

By AT-ECO, on May 28, 2025
Read more
UK Skylights: Pros, Cons & Building Regs Guide

UK Skylights: Pros, Cons & Building Regs Guide

Avoid skylight regrets! Learn about ideal products, installation pitfalls & UK rules for thermal efficiency, fire escape & ventilation.

By AT-ECO, on May 28, 2025
Read more
Sash vs Tilt & Turn Windows: Best for UK Apartments

Sash vs Tilt & Turn Windows: Best for UK Apartments

Choosing windows for your UK apartment? Compare sash vs. tilt & turn for ventilation, cleaning, privacy & energy efficiency. Expert advice for your flat.

By AT-ECO, on May 27, 2025
Read more

New Product Alert: HF 420 Timber/Aluminium Windows Now Available

We’re excited to introduce the HF 420 to our premium range of timber/aluminium window systems. Perfect for both residential and commercial projects, the HF 420 is now available to explore at our Brasted showroom.

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.

TOP