Description
The Ubbink OFT-4 Flat Roof Vents are specifically designed to provide efficient ventilation with a special low air resistance cowl. Suitable for extracting domestic single fans, high-output cooker hood extraction fans, and heat recovery ventilation systems, these vents ensure optimal performance with a pressure/airflow resistance of less than 1.3 Pascal at 225m³/h.
The pipework above the roofline is twin-walled and includes an integral condensation drain, making it a reliable choice for maintaining proper ventilation. With their advanced design and functionality, the OFT-4 vents are ideal for any flat roof ventilation needs.
Why Choose the Ubbink OFT-4 Flat Roof Vent Terminal (Twin Walled) for EPDM - 131mm?
- Twin walled
- Compatible with EPDM roofing materials
- Integral condensation drain
- Large free vent area
- Low Pa resistance
- Strong & durable
- Easy to install
Product Specifications:
Diameter: 131mm
Height Above Roof: 400mm
Flange Diameter: 490mm
Depth Below Roof: 350mm
Free Vent Area: 12,000mm²
Pa Resistance: <1.0
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Ref oft 4 . Can they be used for void breather vents on a flat roof rather than ducted extracts.
Yes you can use this for either mechanical extraction or passive ventilation, just be aware if using to passively vent the roof space the pipe does protrude 350mm below the flange part of the outlet.
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