Quadrant Arm Stays

(17 products)

Quadrant Arm Stays for Fanlight and Hopper Windows

Looking for secure, stylish quadrant arm stays for hopper or fanlight windows? Explore our specialist range in brass, chrome, black iron and more.

Carlisle Brass - Quadrant Arm Stay - Polished Chrome

What Are Quadrant Arm Stays Used For?

Classic Window Support for Fanlight, Hopper and Casement Windows

Quadrant arm stays — are curved mechanical supports designed to restrict the opening of inward-hinged windows. Commonly used on fanlight windows, hopper windows, or bottom-hung casement windows, they ensure controlled ventilation while preventing overextension.

They’re simple but effective – a curved arm follows the arc of the opening sash, stopping at a set point. This protects both the frame and glazing, particularly on timber windows in traditional or period properties.

We offer a wide range of finishes including brass, polished chrome, antique brass, and black iron. These stay arms are typically fixed with screws and are often installed in pairs for added stability.

You can also explore our full fanlight window hardware range, including:

Fanlight Catches – for secure latching
Fanlight Openers – for screw-type high window opening
Pole Hooks – for extending reach to skylights and fanlights
Window Winders – for mechanical or geared window operation

Trusted Brands & UK-Wide Supply

High-Quality Window Ironmongery from the UK’s Best Manufacturers

At Trade Door Handles, we source quadrant window stays and related fittings from leading UK brands like Carlisle Brass, Heritage Brass, Frelan Hardware, and From The Anvil. We also proudly support British-made collections from Kirkpatrick, Frank Allart, Croft Hardware, and Samuel Heath.

Our quadrant stays complement both traditional sash and casement windows and more modern designs. With finishes from antique brass to satin chrome, you're sure to find a style to suit your project.

We deliver across the UK — whether you’re upgrading windows in a Georgian townhouse, restoring a heritage building, or fitting out a contemporary home.

Can’t find the size or finish you need? Contact us — our experts are here to help.

Frequently Asked Questions

What’s the difference between a quadrant stay and roller arm stay?

Quadrant stays are curved and fixed, offering a traditional aesthetic. Roller arm stays include moving parts for smoother operation and are used on both bottom- and side-hung windows.

Are quadrant arm stays suitable for timber windows?

Yes, they are ideal for timber frames, especially in period or heritage properties.

Can I buy quadrant stays online in brass or chrome?

Absolutely. We offer quadrant arm stays in brass, polished chrome, satin finishes and more — all available online with UK-wide delivery.