Schweigen EnviroShield 150mm Smart Shutter draft seal Ventilated polypropylene structure is strong

Ventilated polypropylene structure is strong and robust

and 150mm ducting (not included)

High water resistance

no messy backing paper you need to clean up after a job

Schweigen EnviroShield 150mm Smart Shutter draft seal Ventilated polypropylene structure is strongSchweigen EnviroShield Modular Draft Stopper Engineered in Germany for Ultimate Airtight Performance Discover the future of home ventilation with the Schweigen EnviroShield, the intelligent modular draft stopper designed to eliminate unwanted air infiltration in inline ducted exhaust systems. Featured in our in depth YouTube video, this German engineered innovation outperforms traditional gravity and spring loaded dampers, delivering superior energy