Jason Gravity Louvre, Pressure Relief Damper, Series 12A
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Gravity louvres are pressure relief dampers manufactured from extruded aluminium. They are designed for surface mounting onto doors and walls, and have adjustable blades which open by air pressure. Generally they are fitted on the outsides of buildings and allow the movement of air one way only, from inside to outside providing a good airflow at appropriate pressure levels. A foam rubber inlay strip gives a precise fit to the wall or door. Standard finish satin anodised aluminium, other finishes and sizes available to special order.