Stainless Steel Wall Outlet Gravity Flaps 100mm

An external wall outlet for improving ventilation with cooker hoods, tumble dryers and other high-powered appliances. This 100mm vent comes with four anti-backdraught shutters which open during fan operation, and close when the fan is switched off – this helps to prevent external air flow or wind pressure from entering the property. • Exterior vent for use with high-powered appliances • Designed for connection to 100mm hose or pipe • Anti-backdraught shutters close when fan is off • Minimum free area of 6,876mm² • Operating temperature range of -15°C to 60°C • Made from 304 stainless steel for robust durability • Designed for use with Verplas System 100 round ducting