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Cortizo 4900 HI Sliding Doors
Looking for a sleek, reliable, and budget-friendly sliding door? The Cortizo 4900 HI is a high-performing patio door system that delivers great looks, smooth operation, and multiple layout options — all at an affordable price.
With a slim 35mm central interlock, large glazing capabilities, and optional open corners or pocket door configurations, this system offers impressive flexibility for modern homes.
Why Choose Cortizo 4900 HI Sliding Doors?
Slim 35mm Central Interlock
The minimalist 35mm sightline allows for maximum natural light and a modern aesthetic.
Generous Glazing Options
Capable of sash sizes up to 2.2m wide x 2.6m high, the 4900 HI is ideal for wide views and bright interiors.
Low 20mm Threshold
Perfect for internal transitions, such as between a home and conservatory - offering step-free access.
90° Open Corner Option
Open up an entire corner of your home with no fixed mullion, ideal for creating seamless indoor-outdoor spaces.
ACO Drainage Integration
For exposed areas, this system can be paired with discreet ACO drainage, available in stainless steel or powder-coated finishes.
High Security
Each door comes with a multi-point locking system as standard. Optional laminated safety glass is available for enhanced security.
Quad Track System (4-Panel Stacking)
Need to go even bigger? The quad track system lets four sliding panels stack to one side - perfect for openings over 4 metres wide.
Pocket Doors
Make full use of your opening with pocket doors that glide into the wall cavity for a completely clear space.
Energy Efficient
The 4900 HI features thermally broken aluminium and high-performance glazing options, helping to reduce heat loss in winter and prevent overheating in summer.
Stylish Handle
Our sleek, modern handle is designed to complement the minimalist style of your sliding doors. It's available in any RAL colour to perfectly match your door frame or interior decor - combining form, function, and customisation.
Colour Options
Our Cortizo 4900 HI sliding doors are available in a wide range of high-quality finishes to suit any home style, choose from over 450 durable finishes, including:
Configuration options for the 4900 Hi sliding door system
The Cortizo 4900 HI offers a wide range of versatile configurations to suit modern homes and extensions:
DOWNLOAD CONFIGURATION GUIDENeed Supply-Only Sliding Doors? - Fast, Hassle-Free Installation
Our supply-only aluminium 4900 HI sliding doors are engineered for straightforward installation. Standard sizes are delivered pre-assembled and ready to glaze, helping you save valuable time on site.
Plus, when using 28mm double-glazed units, no wedge gaskets are required — making the fitting process even faster and more efficient for installers.
DOWNLOAD INSTALLATION GUIDE
Why Choose Appley Doors and Windows?
At Appley Doors & Windows, we're committed to delivering high-quality aluminium and PVCu windows and doors, backed by expert craftsmanship and outstanding customer service. Whether you're a homeowner, builder or commercial developer, we provide bespoke glazing solutions designed to stand the test of time.
Why our customers choose us:
From stylish aluminium bifold doors and Cor Vision sliding doors to PVCu windows, commercial doors and curtain walling, we're proud to deliver products that combine performance, quality and modern design.
Frequently Asked Questions
Inline sliding doors are the most common type of sliding system, where the panels glide smoothly within a track. With Cortizo 4900 HI, you can choose from 2, 3, 4, 6 or 8-panel configurations, tailored to your space and layout.
Yes, absolutely. Aluminium sliding doors offer a clean, modern aesthetic and create a seamless flow between indoor and outdoor spaces - features that are highly desirable to homebuyers. They not only enhance your lifestyle but can also increase your property's resale value by adding visual impact, natural light, and practicality.
Yes - absolutely. The Cortizo 4900 HI system is a great choice for balconies, patios, garden rooms, and rear extensions. With slim sightlines and smooth operation, it creates a stylish, space-saving transition between indoor and outdoor areas.
Yes. They're ideal for patios, balconies, garden rooms, and extensions — creating a stylish transition between indoor and outdoor spaces.
Yes. Even with large glass panels, Cortizo 4900 HI sliding doors glide open and shut with ease. This is thanks to high-quality rollers and stainless steel-reinforced tracks, ensuring smooth, effortless operation every time.
Very secure. Every Cortizo 4900 HI sliding door is fitted with a multi-point locking system as standard to help protect your home. For enhanced security, you can also upgrade to laminated safety glass, which adds an extra layer of strength and burglar resistance.
Yes. Unlike bifold or French doors, sliding doors don't require any swing clearance, making them ideal for tighter spaces, open-plan layouts, or where floor space is at a premium. They're a great choice for maximising usable room both inside and out.
Yes. Cortizo 4900 HI doors can slide left, right, or in opposite directions, depending on your chosen configuration.
The cost of aluminium sliding doors depends on several key factors, including:
We offer over 450 colour and finish options, including:
The Cortizo 4900 HI aluminium sliding door system is designed for long-lasting performance and has been rigorously tested to meet high standards of thermal efficiency, weather resistance, and structural strength:
Lead times vary depending on the chosen finish and configuration. Stock finishes typically have a lead time of 2 to 4 weeks, while custom colours or finishes may take up to 8 weeks.
All sliding doors are manufactured at our factory in Appley Bridge, Lancashire, ensuring full quality control and delivery times.
Cortizo 4900 HI sliding doors are manufactured from thermally broken aluminium, a material known for its strength, durability, and energy efficiency. The thermal break helps reduce heat transfer, keeping your home comfortable and energy-efficient year-round.
We offer a range of thresholds to suit your space:
The Cortizo 4900 HI system is designed with slim profiles to maximise light and enhance modern aesthetics:
These sightlines offer an excellent balance between minimal design and structural strength, making them ideal for contemporary homes.
The Cor Vision Plus system offers one of the most flexible sliding door setups on the market, making it ideal for both standard openings and architectural designs. Available configurations include:
Each panel / sash cam be manufactured up to:
Yes, they are. The Cortizo 4900 HI system features thermally broken aluminium profiles and supports high-performance glazing, helping to reduce heat loss in winter and minimise heat gain in summer - making your home more comfortable and energy efficient all year round.
Not yet — but certification is in progress.
The Cortizo 4900 HI system is already designed with robust security features and can be specified with multi-point locking systems and laminated safety glass. While official PAS 24 certification is still in progress, the doors can be configured to meet enhanced security standards.
All our residential products come with a 10-year manufacturing guarantee on the frame as standard.
For commercial products, we offer a 1-year guarantee, with the option to extend coverage through a tailored commercial maintenance package.
Contact us to learn more about our commercial aluminium window maintenance options.
Yes. Clean with a non-abrasive cloth and mild soapy water. Avoid harsh cleaners. View our Maintenance Guide.
You can enhance your Cortizo 4900 HI sliding doors with a range of specialist glazing options, tailored to improve comfort, energy efficiency, and privacy:
Yes. Every Cortizo 4900 HI sliding door is custom-built to your exact specifications - including size, configuration, glazing, colour, and finish. This ensures a perfect fit for your space and style, whether you're working on a new build, extension, or renovation.
We manufacture all products at our own facility in Appley Bridge, West Lancashire, near the border of Greater Manchester
From our base in Appley Bridge, West Lancashire, we manufacture and supply high-quality aluminium doors and windows to homes and trade customers across the North West and surrounding areas, including:
Whether you're a homeowner, builder, or architect, we're proud to deliver expertly crafted aluminium doors and windows across the region.