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KORNICHE LANTERN EXPERTS

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Description

The Cortizo 4700 is one of the UK's most popular aluminium sliding doors. Korniche has refined it with patented SpeedBead glazing, hidden seals and its own locking handles, so you get slimmer frames, more glass and a door that's quicker to fit.

What's included at this price:

- 2 pane in-line slider: 1 fixed and 1 sliding panel
- Matt Anthracite Grey RAL 7016, inside and out
- 28mm double glazed units
- Double track frame with 180mm cill
- Grey shootbolt locking handle and pull handle
- 10-year manufacturer's guarantee

Specification:

- PAS 24 security with dual shootbolt locking and anti-backdrive
- Stainless-steel rails, hardened wheels and sealed bearings for a smooth, quiet glide
- Slim 47mm central interlock
- Fully thermally broken profiles
- Document Q compliant when specified with laminated glass
- Patented SpeedBead clip-in glazing, no wedge gasket needed
- Supplied pre-assembled and ready to glaze (kit form available)

How To Measure

Step 1 – Measure the Structural Opening Width
Measure the width of the opening in three places: at the top, middle, and bottom. Record the smallest of the three measurements, as this is the critical size your door must fit within.

Step 2 – Measure the Structural Opening Height
Measure the height from the finished floor level to the underside of the lintel in three places: left, centre, and right. Again, use the smallest measurement to ensure the door will fit without obstruction.

Step 3 – Check for Squareness
Measure diagonally from corner to corner in both directions. If the measurements are the same, the opening is square. If not, note the difference, as this may affect installation tolerances.

Step 4 – Allow for the Cill
The door comes with a 180mm cill. Allow for your floor finishes and drainage so the door sits at the right level.

Step 5 – Allow for Installation Tolerances
Typically, a small fitting tolerance (usually around 10mm in width and height) is allowed for installation and adjustment. Your final order size should be the structural opening minus the recommended fitting clearance.

Step 6 – Choose Your Sliding Panel
Decide whether the left or right panel slides, viewed from outside.

Step 7 – Double Check All Measurements
Re-measure everything before ordering. Accurate measurements are essential to ensure your Korniche sliding door is manufactured to fit perfectly and installs smoothly.

FAQs

Please read our FAQs page to find out more.

Which panel slides?

You choose. When you order, pick whether the left or right panel slides, viewed from outside. The other panel is fixed.

What size should I order?

The sizes shown are the overall frame size of the door. Measure your structural opening and take off a fitting tolerance (usually around 10mm in width and height). See the How To Measure tab for the full steps. If your opening falls between sizes, ask for a bespoke quote.

What is SpeedBead and why does it matter?

SpeedBead is Korniche's patented clip-in glazing bead. It lets the glass units be fitted in seconds without a wedge gasket, and the seals sit almost hidden in the frame for slimmer sightlines. The beads can also be removed and refitted without damaging the paint finish.

How secure is the sliding door?

It is PAS 24 tested as standard, with dual shootbolt locking points and fibre-reinforced guides. The anti-backdrive shootbolt handle stops the door being forced open from outside, even when it isn't locked. Specify laminated glass for Document Q compliance.

Can I have trickle vents?

Yes. Korniche trickle vents fit through the top of the door frame, so only a slim extension piece is needed for the plaster line. Trickle vents aren't included in the prices shown, so please ask for a quote.

How is the door delivered?

The door arrives pre-assembled and ready to glaze, in protective packaging. Large glass units (over 1.2m wide) come on a crane-equipped vehicle and are unloaded at the kerbside, so you'll need around 3m of clear space around the vehicle and a way to move the glass to a safe place.

Can I get other colours, triple glazing or more panes?

Yes. The Cortizo 4700 comes in over 100 RAL colours (including dual colour), with triple glazing and 3, 4 or 6 pane layouts up to 6.4m wide. Get a bespoke quote and we'll price it for you.

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