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Klober Circular Soffit Vent - 75mm Diameter (Hole size is 70mm) - 13mm Depth. Sold in packs of 50. Circular Soffit Vents are easy to install, providing eaves ventilation through the soffit for new build or re-roofing. Key features: Available in four colours to match painted or stained soffits Lightweight, durable, fits any thickness soffit board – Complies fully with relevant Building Regulations and British Standards Easy circular fixing. Area of application: suitable for installation in soffit boards of any thickness Material: Polypropylene Dimensions: 75mm diameter x 13mm deep Colours: Dark Brown, Light brown, Black, White.