Simple. Spacious.
Two generous panes with a neat central meeting point. A natural starting point for replacement patio doors.
CORTIZO 4700 · ALUMINIUM SLIDING DOORS
Less frame.
More of the
outside.
Open up your home with beautifully slim aluminium sliding doors, made for your space and fitted by your local Spectrum team.
DESIGNED AROUND YOUR HOME
Big views. A beautifully smooth slide.
Family-run in Essex
Cortizo 4700 specialists
Finance options available*
On display in Brightlingsea
A DIFFERENT OUTLOOK
A little less between
you and your garden.
From a quiet morning coffee to a house full of friends, make the garden part of everyday life.
Cortizo 4700 sliding doors bring wide panes of glass and neat aluminium profiles to extensions, kitchen-diners and replacement patio doors. The panels slide alongside one another, leaving your living space free of an inward or outward door swing.
More glassClean lines and generous views
Made for youLayouts, finishes and glazing choices
Everyday comfortThermally broken aluminium frames
MAKE IT YOURS
Your view. Your way.
Explore a layout and finish, then slide the doors open.
We’ll help turn your ideas into the right specification.
CORTIZO 4700
EXTERIOR VIEW
01
Choose your layout
02
Find your finish
RAL colours are screen approximations. Bespoke and dual colours are subject to availability; see physical samples before ordering.
03
The finishing touches
Handle finishes and the final panel arrangement will be confirmed with your quotation.
Enquire about this design ↗ Opens an email with your chosen design included.ROOM FOR POSSIBILITIES
A layout that works for you.
Choose the balance of uninterrupted views and opening space.
Your survey confirms the track, sizes and moving panels.
A wider perspective.
Three panes create a beautifully balanced outlook. A triple-track arrangement can allow panels to stack together.
Open from the centre.
A symmetrical design for wider openings, with the middle panels sliding towards either side.
PLAN YOUR PROJECT
Cortizo 4700 installation prices.
Indicative supply-and-fit budgets, including VAT.
Your final price follows a survey and written quotation.
£3,600–£5,000
Estimated fitted budget · inc. VATFor openings approximately 1.8–2.8m wide × 2.1m high.
Request a two-panel quote£4,900–£6,500
Estimated fitted budget · inc. VATFor openings approximately 2.6–4.0m wide × 2.1m high.
Request a three-panel quote£5,500–£8,000
Estimated fitted budget · inc. VATFor openings approximately 4.0–6.0m wide × 2.1m high.
Request a four-panel quoteWhat the budget assumes
Standard-colour, double-glazed doors, straightforward ground-floor access, installation into a suitable existing opening and an allowance for removing the old doors.
What can change the price?
Bespoke or dual colours, upgraded glass, integral blinds, lifting equipment, difficult access, structural alterations, new openings and substantial making good are priced separately.
Researched planning estimates as at 29 September 2026, derived from advertised UK Cortizo 4700 supply prices and installation charges. These are not confirmed Spectrum prices or fixed quotations, and do not establish an Essex market average. Specifications and site conditions can take the final price outside these ranges.
SPACE. LIGHT. INSPIRATION.
Picture the possibilities.
Explore Cortizo sliding-door inspiration.
Select an image for a closer look.
Product inspiration images. Layouts and specifications vary; not all images show Spectrum installations.
A CLEARER WAY TO PLAN
Your new view.
A little more flexible.
Ask about spreading the cost of your sliding doors. The current finance page outlines a proposed 0% plan over 12 months with a 20% deposit, subject to lender confirmation. Longer terms may be available at a higher APR.
Explore finance options ↗
0%APR · 12 MONTHS
Proposed 0% plan · illustrative example
- Example cash price
- £6,000
- 20% deposit
- £1,200
- Amount of credit
- £4,800
- 12 monthly payments
- £400
- Total payable, including deposit
- £6,000
Not a door price or credit offer. Plan awaiting lender confirmation. Subject to status, eligibility and terms; we will confirm your deposit, APR and repayments before you apply.
COME AND HAVE A LOOK
SEE IT. SLIDE IT. FEEL THE DIFFERENCE.
On display.
On your high street.
Try the Cortizo 4700 doors at our Brightlingsea showroom.
There’s nothing quite like opening the doors yourself. Feel the slide, look closely at the frames and talk through colours and layouts with our friendly team. Bring your measurements, photos or just your ideas.
18 High Street, BrightlingseaColchester, Essex CO7 0AE
A FEW USEFUL ANSWERS
Let’s make it clear.
Which colours can I choose?
Explore popular grey, black and white finishes in the visualiser, or ask about a bespoke RAL colour. Dual-colour options let you coordinate the outside of your home with a lighter finish inside. Availability, finish and lead times are confirmed in your quotation.
How wide can my doors be?
The right dimensions depend on the panel layout, glass weight, track and your opening. We’ll survey your home and confirm the maximum panel sizes and overall dimensions for your exact specification.
Can I choose the glazing and threshold?
We can talk through thermal performance, solar-control glazing and threshold details. The best combination depends on orientation, exposure and how you will use the space. Your quotation will set out the agreed specification.
Do you install across Essex?
Yes. Spectrum Glazing installs in Brightlingsea, Colchester, Clacton-on-Sea and across Essex. Contact our local team to discuss your property and arrange a survey.
Can I see the doors before I order?
Yes — our Cortizo 4700 display is available to view at the Brightlingsea showroom. Get in touch to plan a visit and check current opening hours.
LET’S OPEN UP THE POSSIBILITIES
Ready for a better view?
Talk to Spectrum ↗YOUR NEXT STEP
Tell us about your project.
Send your measurements and ideas to our local team.