2440mm Manthorpe uPVC 25mm Continuous Soffit Ventilator G825 – Brown

The G825 is a heavy-duty, continuous soffit ventilator designed to provide a reliable roof ventilation solution for installations utilizing traditional flat soffit boards where a high-volume 25mm continuous airflow path is required. Manufactured in the UK by Manthorpe using high-precision extrusion techniques, this brown uPVC profile features an integrated, self-retaining adjustable mouth that effortlessly accommodates soffit board thicknesses ranging from 4mm up to 12mm. The extra-wide ventilation platform delivers a massive 25,000mm² of free airflow per metre, ensuring full compliance with UK Building Regulations, British Standards, and NHBC guidelines for properties requiring enhanced roofline ventilation.

To ensure structural reliability and consistent thermal performance, the airflow channel is engineered with long, evenly spaced slots. These precision openings are specifically dimensioned at 4.0mm to effectively prohibit large nesting insects and birds from penetrating the roof void, yet they remain wide enough to actively resist blockages from airborne debris, paint splatters, or water droplets. Extruded from impact-resistant, lead-free uPVC, the G825 will not rot, split, warp, or corrode over time, offering a completely weatherproof trade solution that keeps the roofline immaculate and maintenance-free.

Key Features

25,000mm²/M Free Airflow: Provides high-capacity continuous ventilation equivalent to a 25mm air gap to eliminate condensation in larger roof structures.

4mm to 12mm Board Capacity: Features an integrated adjustable mouth that grips and supports a wide variety of soffit board depths.

Anti-Clog Vent Slots: 4.0mm slot spacing allows unhindered airflow while resisting blockages caused by wet paint, water droplets, and garden debris.

Integral Pest Protection: Engineered profiles block entry to large nesting insects and birds trying to access the roof cavity.

Pre-Drilled Fixing Rails: Pre-punched mechanical fixing holes spaced at 150mm centres guarantee rapid, secure fastening along the fascia run.

Please Note: On-screen colours are for illustration purposes only. Due to variations in digital displays, screen settings, and lighting, actual product colours may vary slightly. We recommend ordering a sample or visiting a branch to view physical colour swatches prior to installation.

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