This outlet cover is designed to fit the ePowerbox EC 400/450 ventilation units, offering a precise and secure connection for enhanced performance. Manufactured from durable materials, it helps protect the fan outlet while maintaining optimal airflow and reducing air leakage. The cover ensures a clean, professional installation finish suitable for both residential and commercial ventilation systems. It is an essential accessory for maintaining efficient and long-lasting operation of the ePowerbox EC series.