Non Return Dampers
Varies
Non return/back draft dampers are a lightweight multi bladed volume control damper, which has been designed to control the airflow in a ductwork system and ensure no airflow returns against the way it was directed. Made from an aluminium casing, the product also has aluminium blades which measure a thickness of 1.2mm. Suitable to fit on to various duct systems all VCDs come with quality approved testing.