W2400MM X H2100MM Cortizo 4700 Aluminium 3 Section Sliding Door

Cortizo 4700 Aluminium Sliding Door

Engineered for those who demand style, security, and precision, the Cortizo 4700 Aluminium Sliding Door is the ultimate expression of premium modern living. Enhanced with exclusive technology, this sleek, reliable door system delivers unmatched performance in thermal efficiency, security, and ease of installation. The signature innovations—like SpeedBead glazing, patented locking systems, and minimalist sightlines—combine with Cortizo’s renowned core design to offer a sliding door that redefines the standard. Whether you’re maximising your view or creating seamless indoor-outdoor transitions, this luxurious sliding door brings award-winning engineering into your home.

Technical Specification

• Size: W2400mm x H2100mm
• System: Cortizo 4700 enhanced 
• Interlock Sightline: 47mm
• U-Value: As low as 1.3 W/m²K (with triple glazing)
• Max Frame Width: 6400mm
• Max Frame Height: 2578mm
• Max Sash Width / Height: 2500mm x 2500mm
• Glass: 28mm Double Glazed, Argon Filled, A Rated, Black Spacer, Low E, Toughened
• Track Options: 180mm double track / 250mm triple track
• Frame Depth: 120mm (double track), 185mm (triple track)
• Sash Depth: 50mm
• Max Glass Unit Weight: 250kg
• Thermal Breaks: Deep polyamide with EPDM and brush-pile weather seals
• Security Rating: PAS 24:2022 Enhanced Security Standard
• Performance Ratings:
  • Air Permeability: Class 3
  • Water Tightness: Class 7A
  • Wind Load Resistance: Class C5
  • Document L & F Compliant
  • DSER C Rated for Renovation/Replacement
• Colour Options:
  • RAL 9910 Gloss White
  • RAL 7016 Matt Anthracite Grey
  • RAL 9005 Matt Black
    

Guarantee

All sliding doors are manufactured in the UK with a rigorous focus on quality control and performance. Each Cortizo 4700 Aluminium Sliding Door comes backed by a 10 Year Manufacturer’s Warranty, covering all parts and manufacturing. Enjoy long-lasting confidence in the durability, functionality, and aesthetic finish of your doors.

Brochure & Downloads

Brochure:

Installation Guide:

FAQs

Q: What makes this sliding door different from standard Cortizo 4700 doors?
A: The Cortizo 4700 integrates patented Korniche technologies, including slimmer sightlines, SpeedBead clip-in glazing, enhanced thermal performance, advanced security features, and sleek proprietary hardware.

Q: Is this door secure enough for my home?
A: Absolutely. It is certified to PAS 24:2022, featuring Korniche’s shoot-bolt locking system with anti-backdrive technology. This means even when unlocked, the handle cannot be rotated by force from the outside.

Q: How energy efficient is the door?
A: With a U-value as low as 1.3 W/m²K (with triple glazing), and full Document L compliance, this door keeps your home warm in the winter and cool in the summer, reducing energy bills.

Q: Can I customise the colour of my sliding door?
A: Yes! You can choose from three popular stock colours or over 150 bespoke RAL finishes, including dual-colour options for interior/exterior contrast. Bespoke colours may extend lead time by approx. 5 weeks.

Q: What’s the installation process like?
A: Installation is quick and straightforward thanks to the SpeedBead system, pre-fitted seals, and pre-assembled panels. Full guides and crane-assisted oversized glass delivery are available.

Q: Do the doors support integrated blinds or trickle vents?
A: Yes. Trickle vents are discreetly fitted through the head of the frame for a clean look, and integrated blinds are available for most glazing configurations.

Q: What configurations are possible?
A: The door can be fabricated with double or triple tracks, allowing for wide openings and custom setups. You also have options for flush thresholds and minimal step-overs.