The cowl is up to 20% less resistant to airflow making the extractor fan up to 20% more energy efficient than when used with a conventional cowl or grille. The Energysaver Cowl counteracts the detrimental effects of external wind on the performance of mechanical extract ventilation systems and passive vents. Energysaver Cowl is the only independently tested energy efficient ventilation grille. The Energysaver Cowl is Part F Compliant Offered in 100mm (4inch) in White or Brown, Manufacturer: Airtech
The cowl is up to 20% less resistant to airflow making the extractor fan up to 20% more energy efficient than when used with a conventional cowl or grille. The Energysaver Cowl counteracts the detrimental effects of external wind on the performance of mechanical extract ventilation systems and passive vents. Energysaver Cowl is the only independently tested energy efficient ventilation grille. The Energysaver Cowl is Part F Compliant Offered in 100mm (4inch) in White or Brown, Manufacturer: Airtech
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