Our variable EAV window vents offer flexible airflow control, with partial closure for comfortable natural ventilation. The innovative clip-fit option enables fast, hassle-free installation, reducing costs for new windows or on-site replacements. Available in 2,000–2,500 mm², 4,000 mm², and 5,000–5,500 mm² EAs, they suit a wide range of rooms and dwelling types.

Benefits

Suitable for applications requiring a high equivalent area (EA), helping to meet minimum room ventilation requirements under the latest Building Regulations (typically between 4,000 mm² and 10,000 mm² EA, depending on room type and dwelling).
Dual EA capability on selected models (2,000/2,500 EAV or 5,000/5,500 EAV) through alternative routing sizes, helping to reduce stock requirements.
Variable control allowing users to fully or partially close the internal vent to achieve the desired flow of natural ventilation.
Manufactured from durable ASA plastic for high impact strength and excellent UV resistance, reducing discolouration and weathering.
Excellent air tightness performance, increasingly important with dwelling air pressure tests.
Aesthetically pleasing design – unobtrusive when installed.
Flexible installation with screw-fix or pre-installed clip-fit options, ensuring fast, secure fitting across a range of profile depths.
Available in a wide colour range, including bespoke RAL finishes on request.
Fully accredited – The EAV Vent has been independently tested at a third party accredited test house to all of the current British Standards.