Explore our range of certified automatic opening vent systems. From individual components to complete stairwell ventilation packages — we supply everything you need for Building Regulations compliance.
Top-hung casement windows with electric chain actuators for natural smoke ventilation.
Flat and pitched roof ventilation systems for effective smoke exhaust in commercial buildings.
Slim-profile automatic louvre systems for facades and stairwells.
Fire-rated smoke control dampers for ductwork and corridor pressurisation systems.
Complete stairwell smoke ventilation packages with control panel and battery backup.
Fire alarm-integrated control panels for single and multi-zone AOV systems.
AOV Windows, a division of Ravenholt Group Limited, is a leading distributor of automatic opening vent systems across the United Kingdom. We specialise in providing certified smoke ventilation solutions for commercial, residential, and industrial applications.
Our product range includes chain actuator windows, roof vents, louvre systems, smoke dampers, and complete stairwell ventilation packages. Every product we supply is tested and certified to the relevant British and European standards, ensuring full compliance with Building Regulations Approved Document B.
Based in Greenford, West London, we offer nationwide delivery with many products available for next-day dispatch. Our technical team is on hand to provide free advice on system design, product selection, and Building Regulations compliance.
All our AOV products are independently tested and certified to BS EN 12101-2 and other relevant standards. Full compliance with Approved Document B guaranteed.
Most products are held in stock at our Greenford warehouse for next-day UK delivery. Larger orders and bespoke items typically ship within 5–7 working days.
Our experienced team provides free technical support, from system design and product selection through to Building Control submissions and installation guidance.
We offer trade and volume pricing across our full product range. Request a quote for multi-unit orders and project-specific discounts. We won't be beaten on price.
Unit 10, Rockware Business Centre
Greenford, UB6 0AA
United Kingdom
Monday – Friday: 8:00 AM – 5:00 PM
Saturday – Sunday: Closed
