HeadVent Over-frame Trickle Ventilation
Attractive and effective over-frame trickle ventilation
The Cavalok HeadVent is a simple, unobtrusive and effective way to deliver excellent ventilation to your buildings, eliminating the need for unsightly through-frame ventilation.
Unobtrusive, easy-fit ventilation
This attractive, slimline over-frame ventilation profile maximises airflow performance and minimises fabrication and fitting time, with no need to drill through the window frame. What’s more, the HeadVent can deliver a greater airflow than by through-frame vents. Venting over the window frame makes it easier to meet the requirements of Part F of the Building Regulations.
High-performance, compatible components
The slim Cavalok HeadVent profile features a scotia-moulded front, and is compatible with most window systems. For a complete solution, Cavalok also supplies a range of complementary vent and grill accessories, enabling you to achieve the best combination of aesthetics and ventilation performance.
Why choose the Cavalok HeadVent system?
- Slimline, scotia-moulded design – for attractive, unobtrusive appearance
- Maximise airflow – to meet Part F regulations
- Simple and fast to fit – saving you time and money
- Compatible with PVC-U window systems up to 70mm wide – to suit most buildings
- Maximise airflow – to meet Part F regulations
- Full range of accessories available to create complete vent system – optimising aesthetics and performance
Versatile design
The Cavalok HeadVent profile is designed to combine easily into cavity closer frames with the Cavalok and BigBlok closer ranges, or can be fitted independently to the window frame.




