French Casement.
Two sashes, no centre post. A window that goes wide open, filling the room with light and fresh air. A+ rated, made in the UK to your exact opening.
French Casement Window
uPVC Window System
Glazing
Double / Triple
Energy
A+ Rated
Security
PAS 24 available
Frame
30 Finishes
Hardware
6 Finishes
Warranty
10 Year
Opens Wide. Nothing in the Way.
The secret is the flying mullion: the central post travels with the master sash, so when both sashes swing open nothing is left standing in the middle. The result is one wide, unobstructed opening that floods the room with light and fresh air, and connects you effortlessly to the garden, balcony or terrace beyond.
Engineered for everyday excellence.
Made to measure in the UK. One clever flying mullion unlocks light, air and safety, and here are four good reasons it earns its place in any home.
Wide clear opening
The flying mullion means no fixed centre post. Open both sashes and the full width of the window is yours, for uninterrupted views and maximum airflow.
A built-in escape route
The full clear opening meets Building Regulations Part B for emergency egress, making French casements an ideal choice for bedrooms and upper floors.
Ventilate on your terms
A ventilation control device lets both vents open fully or independently, so you can keep air moving through the night without compromising security.
Easy to live with
The easy-clean hinge option gives access to both faces of the glass from inside, perfect for upstairs windows and exceptionally low maintenance.
Specifications
1.2
U-Value (W/m²K)
Excellent thermal efficiency to help reduce energy bills.
PAS 24 available
Security
PAS 24 security available for enhanced protection and peace of mind.
A+
Energy Rating
Top energy rating for maximum performance and sustainability.
Double / Triple
Glazing
Double or triple glazing options for comfort and quiet.
Multi-point
Locking
Advanced multi-point locking for superior security.
100%
Recyclable uPVC
Sustainable by design. 100% recyclable uPVC.
10 Years
Guarantee
Backed by our 10-year product guarantee.
30+
Colours
A wide choice of colours to suit every style.
Technical
Built for performance
Two outward-opening sashes with a flying mullion on a 70mm double-rebated sculptured profile. Welded joints, hand finished, with multi-point locking as standard. Compatible with 28mm double or 36mm triple glazed units. 100% recyclable PVC‑U with a 10-year product guarantee.
Configurations
Flexible design options
Equal or unequal sash splits with top-light options, Georgian bar layouts and easy-clean hinges, configured to suit your opening.
Finishes
Made to match your space
20 colourways held in stock, with 30 available across the woodgrain collection. Smooth, grained, and woodgrain foils that never need repainting, with dual-colour options for a different finish inside and out. All finishes carry the same 10-year guarantee.
Make it yours.
Selected colour · Agate Grey
How long does installation take?
Agree the survey, installation and any approval timetable with the team for your project.
Is the installation FENSA-registered, and do I get the certificate?
Yes. Apex Glazing is FENSA-registered (Reg 40373). For eligible replacement windows and doors you receive a FENSA certificate when the job is done. It confirms the work complies with Building Regulations and is registered with your local council. FENSA does not cover new builds, new extensions, conservatories or porches.
What warranty do I get?
A 10-year guarantee on the product and a 10-year guarantee on the installation, with an insurance-backed warranty. Your guarantee certificate comes with the completion email.
Do you remove and dispose of the old windows or doors?
Yes, removal of existing units, safe disposal at a licensed waste facility, making good of internal and external reveals, and a thorough final clean-up are all included in the quoted price. There are no extras for skip hire, scaffolding, or waste removal.
Can you match existing windows for a phased replacement?
Yes. We can RAL colour-match the new frames to your existing units, replicate sightlines, glazing bar layouts, and hardware style to keep a phased replacement consistent. Bring photos to the survey, or we'll come and measure the existing windows so the new ones blend in seamlessly when fitted alongside.
