AU 661 series - aluminium
AU 661 series - aluminium
The AU 661 is an in-duct backdraft damper to create positive or negative pressure in a commercial building,
![AU 661 series - aluminium](https://assets.aldes.com/assets/media/Catalogue_Aldes/01-Produits_Corporate/01-Corporate/03-Identite_Visuelle/02-Pictogrammes_Corporate/10-Pictos_Web/Made-in-Europe_Picto_001_small.png)
AU 661 series - aluminium
The AU 661 is an in-duct backdraft damper to create positive or negative pressure in a commercial building, The frame is made of galvanised steel and the mobile vanes are made of profiled sheet aluminium. Dimensions available from 200 x 200 mm to 1600 x 2000 mm in increments of 25 mm in L and 150 mm in H.
![AU 661 series - aluminium](https://assets.aldes.com/assets/media/Catalogue_Aldes/01-Produits_Corporate/01-Corporate/01-Visuels_HealthyLiving/01-Visuels_Ambiances/Aldes_Ambiance_010_produitPlus.png)
The + products
- grille suited for installation in duct.
The AU 661 is an in-duct backdraft damper to create positive or negative pressure in a commercial building,
- in-duct backdraft damper to create positive or negative pressure,
- mobile vanes made of profiled aluminium, with airtight strip on inner edge,
- vanes fitted on nylon bearings and connected together with rods,
- U-shape profile galvanised steel frame,
- standard rough aluminium finish.
- installed in a duct.
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