VS

VS are negative pressure non-return dampers designed to prevent backflow of air into the ventilated space. They open automatically under negative pressure when the fan is started. The lightweight damper wings are made of thin aluminium sheet. The underpressure dampers have a flange made of galvanized sheet metal. They are mounted from below with screws in the prepared threads, directly on the fan base plate. The VS non-return dampers are designed for use with NK and NDH roof attachments. The pressure drop characteristics of the VS dampers are shown in the charts.

-14%
VS 180

backdraught damper

Regular Price: €36 €44

Special Price Excl. Tax: €31 Incl. Tax: €37

within a week

Duct: 180
-15%
VS 250

backdraught damper

Regular Price: €37 €45

Special Price Excl. Tax: €32 Incl. Tax: €38

within a week

Duct: 250
-15%
VS 315

backdraught damper

Regular Price: €57 €69

Special Price Excl. Tax: €49 Incl. Tax: €59

within a week

Duct: 315
-15%
VS 355

backdraught damper

Regular Price: €66 €79

Special Price Excl. Tax: €56 Incl. Tax: €67

within a week

Duct: 355
-14%
VS 400

backdraught damper

Regular Price: €69 €83

Special Price Excl. Tax: €58 Incl. Tax: €71

within a week

Duct: 400
-15%
VS 630

backdraught damper

Regular Price: €109 €132

Special Price Excl. Tax: €93 Incl. Tax: €112

within a week

Duct: 630