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Cortizo 4700 Sliding Door

The Cortizo 4700 is a sturdier, more traditional sliding door, with a 47mm interlock. Panels up to 2.5m wide and 3m tall, double glazed, made to measure in our Slough factory.

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Cortizo 4700 Sliding Door

The Cortizo 4700 is a sliding patio door with a sturdier, more traditional frame. Its 47mm interlock suits homes where an ultra-slim frame would look out of place. We make every 4700 door in our Slough factory, made to measure for your opening.

  • Interlock – 47mm
  • Panels – up to 2.5m wide and 3m tall, and up to 280kg each
  • Layouts – inline or lift-and-slide, with 2, 3, 4 or 6 panels on up to 4 tracks, and pocket doors that slide into the wall
  • Glass – double glazed units from 26mm to 36mm, U-value from 1.0 W/m²K, sound reduction up to 40dB
  • Frame – 115–120mm deep for two tracks, 185mm for three
  • Security – multi-point locking, with PAS 24 available

If you want the slimmest look, COR Vision has a 20mm sightline.

Aluminium sliding doors in a modern bedroom with scenic views.
Elegant aluminium sliding doors with large glass panels.

Technical Specifications

 
47mm
Sight-line
at the central interlock
Up to
3000mm
Max panel size
tall × 2500mm wide
From
1.0W/m²K
U-value
Up to
40dB
Acoustic
  • Glazing26–36mm double glazed units
  • Frame depth115–120mm (2-track) · 185mm (3-track)
  • Max panel weight280kg
  • ConfigurationsInline or lift-and-slide; 2, 3, 4 or 6 panels on up to 4 tracks; pocket doors
  • SecurityPAS 24 available, multi-point locking

Cross Section

Cortizo 4700 profile cross section

The Cortizo 4700 profile, cut through to show how the frame and glass fit together.

Glass Options

Every Cortizo 4700 sliding door is made with the glass to suit your project. These are the units we fit most, drawn to scale.

Swipe to see each unit →

ArgonLow-EcoatingWarm edgespacerSealant4204OutsideInside28 mm unit
Standard 4/20/4Two 4 mm panes, Low-E coated, with an argon-filled gap of 20 mm. The everyday choice for windows and doors.
ArgonLow-Ecoating6166OutsideInside28 mm unit
Thicker pane 6/16/6Both panes go up to 6 mm for extra strength on larger panes and doors, keeping the same 28 mm unit.
ArgonNoiseQuieterInterlayer0.8 mmLow-Ecoating4166.8OutsideInside26.8 mm unit
Laminated / acoustic 4/16/6.8Two 3 mm sheets bonded to a tough clear interlayer. If it breaks it holds together, and the acoustic interlayer soaks up noise from busy roads.
ArgonHeatreflectedLess heatgets inLow-Ecoating4204OutsideInside28 mm unit
Solar control 4/20/4A coating on the outer pane reflects much of the sun's heat before it gets in. For south-facing glass, roofs and extensions.
In every unit
Warm edge spacer
The bar that holds the panes apart around the edge. It is made from a low-conducting composite instead of aluminium, so the edge of the glass stays warmer, with less heat loss and less condensation. It is filled with desiccant, which soaks up any moisture sealed inside so the unit never mists.
Sealant
The black outer seal bonds the panes and spacer into one unit, keeps the argon in and keeps moisture out.
Low-E coating
An invisible metal-oxide layer on the inside face of the glass that reflects heat back into the room.

4700 frames take double glazed units from 26 to 36 mm, so triple glazed (36 mm) units are not available on this system.

We specify the optimal glass configuration for each project based on thermal performance, acoustic requirements and Building Regulations compliance.

Colours & Finishes

Every Cortizo 4700 sliding door we make is polyester powder coated in-house to the Qualicoat standard, in any RAL colour, matt or gloss. The colour is guaranteed for 25 years.

Popular Colours

  • RAL 7016 Anthracite Grey
  • RAL 9005 Jet Black
  • RAL 7021 Black Grey
  • RAL 9010 Pure White
  • RAL 9001 Cream White
  • RAL 7012 Basalt Grey
  • RAL 7022 Umbra Grey
  • RAL 6009 Fir Green
  • RAL 8014 Sepia Brown

Special Finishes

  • Heritage Bronze Our Alchemy range, exclusive to DTW. It has no RAL equivalent and is available on every system we make.
  • Anodised Anolok or equivalent anodised shades. Ask us for details.

Any standard RAL colour is available to order. Ask for a physical sample at your consultation.

FAQs About Cortizo 4700 Sliding Doors at Direct Trade Windows

What is the Cortizo 4700 sliding door?

An aluminium sliding patio door from Cortizo with a sturdier, more traditional 47mm interlock. It suits homes where an ultra-slim frame would look out of place.

How big can Cortizo 4700 panels be?

Each panel can be up to 2.5 metres wide, 3 metres tall and 280kg. Doors can have 2, 3, 4 or 6 panels.

What glass does the 4700 take?

Double glazed units from 26mm to 36mm thick, with a U-value from 1.0 W/m²K and sound reduction up to 40dB.

Can the 4700 open up a corner completely?

No. The 4700 needs a fixed corner post. For a corner that opens completely, choose COR Vision, COR Vision Evolution or COR Vision Plus, where the corner post slides away with one of the panels.

How is the 4700 different from COR Vision?

COR Vision has just 20mm of aluminium where the panels meet, for the slimmest look. The 4700 has a chunkier 47mm interlock and a more traditional look, with the same 2.5 × 3 metre maximum panel.

Is the 4700 secure?

Yes. It has multi-point locking, and PAS 24 is available.

What colours can I have?

Any RAL colour, matt or gloss, plus our Heritage Bronze, which is exclusive to DTW.

How much does a Cortizo 4700 sliding door cost?

The 4700 is priced on request, because every door is sized to its opening. Send us your sizes or drawings and we'll give you a written quote.

Is the Cortizo 4700 available as a lift-and-slide door?

Yes. We make the 4700 as an inline sliding door or as a lift-and-slide. On a lift-and-slide, turning the handle lifts the panel onto its rollers so even a large, heavy panel slides easily, then lowers it back onto its seals when you close it.

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Cortizo logo FENSA logo BFRC logo Accreditation logo for Direct Trade Windows company. Constructionline Gold Member badge for trusted building industry standards. Close-up of a window with a focus on the frame and glass. Aluminium window with sleek design and modern finish.