Trickle Ventilator – High Flow Plus
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The Astro Framevent Hi‑Flow Plus is a premium background ventilation terminal designed to comply with Approved Document F 2021 while sustaining the clean, rounded design of the Framevent series. Crafted from high-quality UV-stabilized PVCu, it delivers superior airflow efficiency in a slim profile.
- Provides 5,205 mm² equivalent airflow on a 525 mm length
- Conforms to BS EN 13141‑1:2019 performance standards
- Tested to BS EN 1026:2016 & BS EN 1027:2016 for weather resistance
- Independently assessed for acoustic performance per BS EN 20140‑10:2016
- Clip-on snap-fit ends and rod control option support Approved Document K compliance
- Integral external flyscreen and positive open/close action
- Can be installed for both updraught and downdraught airflow
- UV-stabilized PVCu construction for durability and ease of maintenance
Available Colours (525 mm):
- White
- Black
- Brown
- Anthracite Grey
Ideal for windows and doors in residential or commercial buildings, especially those needing high airflow to meet current building regulations without compromising appearance.
Shipping & Returns
WHY CHOOSE PREMIER?
40+ Years of Trust
With over 40 years of combined experience, our team has been trusted by domestic and commercial customers across the UK. We work with fully certified, highly skilled independent installers - including those with FIRAS and BM Trada credentials -to deliver fire door sets you can rely on. Every product and service is backed by decades of hands-on expertise and a commitment to high-quality results.
No Quibble Returns
We want you to feel 100% confident when ordering with us. That’s why we offer No Quibble Returns on all eligible items.
- Items must be in original packaging, and in the same condition you received them.
- Bespoke or made-to-order items are non-refundable.
- Simply email us at sales@activefiresafety.com to request your return.
- We’ll send you a return label and instructions - we make it easy.
- Refunds are processed once your item is received and approved.
For more information, visit our Refunds & Returns Policy
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When you contact us, you’ll speak to a real person who knows fire safety and actually wants to help.
Whether you’ve got questions before buying or need support after your order, we’re here every step of the way. No ticket numbers, no frustrating loops, just real answers.
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