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 Fra mevent 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. Show more