Fabco Steel Windows

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Side Hung Casements

Fabco Side Hung windows offer timeless design and exceptional performance, combining classic w20 steel aesthetics with modern functionality. Featuring slender sightlines and robust steel frames, these windows maximise natural light and airflow while providing reliable security and weather resistance.

Paired with the Frank Allart handle and sliding stay, each casement can be locked in either the closed, or night latch setting for extra ventilation on those warmer evenings. Ideal for both traditional and contemporary spaces, they deliver a beautiful, versatile solution that enhances any building’s character and comfort.

Available in either W20 0r W20+

Top Hung Casements

Our Top Hung windows combine elegant steel design with practical functionality, featuring a top-hung opening that allows for controlled ventilation while keeping the window securely latched. Equipped with a robust solid brass peg stay, these windows can be held open at a variety of increasing angles, providing airflow without compromise.

The peg stay can also be fully locked for maximum security in the closed position. Precision-engineered from our W20 steel sections, Fabco Top Hung windows are built to last and can be customised to suit both traditional and contemporary architectural styles. Their slim sightlines, smooth operation, and versatile design make them an ideal choice for bright, airy, and secure spaces.

Available in either W20 0r W20+

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Our useful comparisons chart makes understanding the differences and benefits between each range of product type. Click here to view/download

Pivot Windows

Fabco pivot windows offer a striking combination of contemporary design and functional performance, featuring a central pivot mechanism that allows the window to rotate smoothly for effortless ventilation and easy cleaning.

The unique pivot operation creates an eye‑catching architectural feature while providing flexible airflow control and a secure fit when closed, held in place by a solid brass eyelet latch from Frank Allart.

Steel Windows FAQs

Got questions about this product? Read common questions below.

What sets Fabco frames apart?
Fabco frames use hot-rolled steel for production, produced in Switzerland for uncompromising quality, and shipped directly to our factory in West Sussex where are in house team fabricate the frames.

Why choose steel glazing or aluminium?
Steel is much stronger than aluminium, enabling our products to maintain a slimmer profile whilst also spanning further per leaf. For example, our external doors can be scaled up to 2500mm (H), whereas an aluminium frame that is four times the profile size is limited to 2400mm (H). Watch out for ‘steel-like’ products, they are still aluminium!
Our frames also use authentic steel glazing bars welded into the frame during fabrication, whereas other like-for-like products can consist of 10-12mm plastic glazing bars adhered to the glass which fail over time due to fluctuations in conditions.

Do you work with heritage sites?
Fabco can and has produced steel glazing for heritage and listed building sites, with some beautiful examples on our social media. We can offer single glazing for these projects in line with building control requirements.

Double or triple glazing?
Due to the slim nature of our frames steel profile, Fabco are able to fit an 18mm double glazed unit into the frames. Triple glazing is unfortunately too chunky for our product, and requires a larger aluminium profile. We use an incredibly high performing double glazed unit, filled with Krypton gas which performs far greater than the industry standard Argon gas

Can you offer different locking options?
We offer a standard 5-lever locking system with our external doors, with the option to upgrade to our multipoint locking for extra security. Multipoint is required if the door(s) is a final point of exit. We can also offer PAS24 security certified doors, subject to design.

What makes Fabco steel windows different?
Fabco offers a range of window products, from side hung, top hung, floating mullions and pivots, enabling a vast option of customisability for your individual projects.


Steel Doors

From traditional W20 steel, A+ Rated energy efficiency, and fire rated W40 frames, we have an strong core range of doors to suit your requirements.


Steel Windows

Open a world of possibilities with our range of windows, available in a variety of opening configurations of side and top hung casements.


Steel Partitions

Create an elegant divide to a room, uninterrupted views from the property, or a touch of class to a shower room with the inclusion of our w20 screens.

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Call us on

Email us at

or just fill in a few details about your project on our form and one of our team will contact you with information and advice.