This is a Picture frame adaptor for Unity dMEV fan which is designed to provide a perfect aesthetic finish when the unity fan is used as a replacement in existing diameter 150mm wall installations. · · · Made from high-quality materials · · Provides a secure and stable mounting platform for the Unity dMEV Fan · · Allows you to position the fan in the optimal location for your needs · · Secure and stable mounting platform · · Using as little as 1.1 watts, Unity’s energy performance is ideal for directly reducing carbon emissions in SAP · · The unique 100% variable airflow feature offers peace of mind to Installers that Building Regulation compliance can be easily achieved