Apply Discount Code
SEC-VIRAGE-21W-COCKL
Virage CB21WHL 21mm White LH Locking Cockspur Window Handle
Main image
Click to view image in fullscreen
![]()
Virage CB21WHL 21mm White LH Locking Cockspur Window Handle
In stock
Delivery Information
| Delivery Time Frame | Delivery Information |
| Next Working Day By 1PM | When an order is placed by 3pm for next working day on certain items |
| Standard Delivery | Usually delivered in 2 to 4 working days |
| Delivery Charges | |
| UK Mainland | Prices start at £3.95 for very small items, £6.50 for small, £9.50 for medium and £20 for large/long items |
| Scottish Highlands & Islands, Northern Ireland & Ireland | Prices from £30, please see our delivery page for more info. |
View Delivery Information
£7.49
Incl. VAT
£6.24
Excl. VAT
Incl. VAT
Excl. VAT
Incl. VAT
Excl. VAT
Price is for/per each
-
+
See our full range:
Description
Restore Your Windows with the Virage CB21WHL Cockspur Fastener
Finding the right replacement hardware for older double glazing can sometimes feel like a daunting task. Over the years, window mechanisms evolve, profiles shift, and locating an exact match requires a keen eye for detail. The Virage CB21WHL 21mm White LH Locking Cockspur Window Handle provides an outstanding, dependable solution for homeowners, landlords, and professional maintenance teams looking to refresh their casement windows without having to replace the entire frame.
Cockspur handles are a traditional staple of British window design. Unlike modern espagnolette systems that run multi-point locking bars inside the sash, a cockspur handle secures the opening sash directly against the outer frame by latching its spur over a small wedge. Because it operates on this straightforward mechanical principle, getting the correct stack height is essential for an airtight seal. This particular model delivers a dedicated 21mm backset stack height, making it an ideal choice for a wide variety of slimline uPVC and aluminium window profiles that require precise clearance to draw the sash tight against the weather seals.
Brought to you by Doorfit, this white left hand fastener blends a clean, understated aesthetic with robust everyday security. Whether you are dealing with a worn-out latch that no longer pulls the window closed properly, a snapped spur, or a lost key that leaves your home vulnerable, this handle allows you to restore smooth operation and peace of mind in just a few minutes of straightforward DIY installation.
Stack Height
21mm Backset
Handing
Left Hand
Finish
Gloss White
Operation
Key Locking
Ergonomic Sculpted Contour
The Virage series is recognised across the glazing trade for its attractive curved profile. Unlike boxy, industrial handles from decades past, this model features a gentle contour that rests naturally in the palm of your hand. The smooth push-button release operates with light thumb pressure, disengaging the latch cleanly before you swing the sash open. When drawn shut, the fluid lines sit neatly against the frame profile, delivering a contemporary update to older window styles without looking out of place.
Resilient Powder-Coated Finish
Kitchens, bathrooms, and utility areas are subject to noticeable temperature swings and regular humidity. This handle is coated in a durable, hard-wearing gloss white finish designed to resist everyday chips, scuffs, and moisture damage. The high-grade surface treatment matches standard white uPVC frames seamlessly, ensuring that the new handle looks completely integrated with your existing window suites rather than appearing as a mismatched replacement.
Dedicated Security and Safety
Keeping ground floor and accessible windows secure is a primary concern for any household. The integrated cylinder deadlocks the push button using an included key, preventing unauthorised opening from outside even if an intruder attempts to force the glass. For routine daily ventilation, the spring-loaded button allows you to unlatch and latch the window quickly without having to turn the key each time, offering an ideal balance between home security and convenient everyday living.
Standardised Fixing Layout
Window repair needs to be fast and hassle-free. The handle base incorporates the standard cockspur screw hole spacing pattern common to traditional window fittings across the UK. By keeping the fixing centres aligned with classic trade conventions, it enables you to screw the new unit into existing frame holes in the vast majority of retrofits, minimising the need to drill fresh screw locations into delicate aluminium or hollow uPVC chambers.
Understanding Cockspur Handing and Measurements
Choosing the correct window handle can occasionally cause confusion because terminology varies between trades. To make sure you select the perfect piece of hardware on the first attempt, it helps to understand how cockspur handing and stack heights are determined.
First, consider the hand orientation. Handing for cockspur fasteners is identified by looking at the window from the inside of your room. A left-hand handle, such as this Doorfit supplied unit, is fitted to windows where the handle body mounts vertically or horizontally, and the spur points to the left when moving into its closed position over the striker wedge. If your window opens outwards to the right on side hinges, the handle will generally sit on the left side of the moving sash, pointing downwards or sideways towards the outer frame. Checking the direction your current handle swings will ensure this left-hand variant matches your existing setup perfectly.
Second, the stack height or backset measurement is critical. The 21mm dimension refers to the distance measured from the underside flat mounting face of the handle base down to the contact underside of the projecting cockspur nose. When you close the window, this spur glides over a plastic wedge that is fixed to the stationary outer frame. If you choose a stack height that is too small, the handle will jam against the frame before it can engage. If you select one that is too large, the spur will pass over the wedge loosely without compressing the rubber weather seals, resulting in draughts and poor insulation.
While 9mm and 12mm stack heights are common on ultra-slim modern aluminium frames, a 21mm measurement is widely used on classic aluminium and timber-alternative installations with step-down frame profiles. Measuring your current handle takes only a moment with a ruler or calliper, and choosing the precise 21mm specification ensures that your window pulls shut firmly against external wind and driving rain.
Detailed Technical Specifications
The Virage CB21WHL 21mm White LH Locking Cockspur Window Handle is engineered to robust industry standards, providing the strength required to compress weather seals season after season. Review the complete technical breakdown below before undertaking your installation project.
| Attribute | Specification Details |
|---|---|
| Model Code | CB21WHL |
| Handle Style | Virage Ergonomic Cockspur Fastener |
| Stack Height Clearance | 21mm (Measured from base underside to spur contact face) |
| Handing Configuration | Left Hand Operation |
| Locking Mechanism | Push-button cylinder deadlock with universal key access |
| Finish and Colour | Durable powder-coated architectural white |
| Base Material | Die-cast zinc alloy for rigid structural integrity |
| Compatibility | uPVC, timber, and aluminium casement window frames |
Step-by-Step Installation Guide
Installing your replacement window handle is one of the easiest home maintenance tasks you can undertake. It requires only standard household tools and takes approximately ten minutes per window. Follow these clear steps to fit your hardware correctly.
- Remove the existing handle screw covers. Gently pop off the decorative plastic screw cap located on the front of the handle body using a flat blade screwdriver. This reveals the primary top fixing screw.
- Unscrew the old hardware. Using a manual cross-head screwdriver, remove the top screw and the lower fixing screws located beneath the lever arm. Hold the handle firmly as you remove the final fastener to avoid dropping it against the sill.
- Clean and prepare the surface. Wipe away built-up grime, residue, and oxidation from the window sash where the old handle was seated. Clean mounting faces guarantee that the replacement handle sits completely flush and stable.
- Position the new handle. Align the base of your replacement handle with the existing screw apertures in the sash profile. Ensure the spur points in the correct direction towards the outer frame wedge.
- Secure the fixings. Insert the screws by hand first to make sure they engage the threads cleanly. Tighten them firmly using a hand screwdriver. Avoid using high-torque power drills which can strip the internal threads inside uPVC reinforcement chambers.
- Test operation and fit caps. Move the handle into its closed position to confirm that the cockspur glides cleanly over the wedge, pulling the sash snug. Press the locking cylinder and test the key turn. Once satisfied, snap the included screw cover cap in place for a neat, professional appearance.
Professional Fitting Tip. If your existing screw holes have become loose or enlarged over decades of use, inserting slightly wider gauge repair screws or specialist plastic screw plugs will restore an exceptionally tight, wobble-free hold.
Frequently Asked Questions
How do I verify that I need a 21mm stack height instead of a smaller size?
Measure from the underside surface of the flat baseplate where it touches the frame up to the contact underside edge of the spur. If this gap measures exactly 21mm, this unit will match your frame geometry. If the measurement is around 9mm or 13mm, you will need a low-stack model instead to prevent the latch from catching incorrectly.
Can this handle be fitted onto timber or aluminium windows?
Yes, cockspur handles are universal in their mounting approach. Provided your window frame uses an external striker wedge and has adequate flat mounting width for the baseplate, this fastener performs brilliantly across timber, composite, and aluminium profiles.
Does every handle come with its own key?
Yes, each handle is supplied with an operating key along with the matching screw cover cap. If you purchase multiple units, the keys are standard pattern fasteners across the range, allowing you to use one key conveniently throughout your home.
Ready to Secure Your Home?
Order genuine replacement window hardware directly from Doorfit for fast, reliable delivery.
In Stock Now
Specification
| Finish | White |
|---|---|
| Guarantee | 12 Months |
| Fixing Centres (mm) | 58 |
| Handed | Left |
| Window Material Suitability | UPVC |
| Handle Type | Cockspur |