The roof ventilators of the DV 30 series with horizontal air output are suitable for discharging non-dusty air and other non-aggressive gases or vapours at temperatures between -20 C and +40 C. The rectangular housing of galvanised steel plate has two outlet openings opposite one another. They are covered by flow-optimised weather guard grids, from which the air emerges horizontally, with high directionality and without swirl.

All roof ventilators are supplied ready to connect, with inspection switch

• The roof ventilators of the DV 40-125 series with vertical air output are suitable for discharging non-dusty air and other non-aggressive gases or vapours at temperatures between -20 C and +40 C.

• The attractively shaped housing and the base frame are manufactured from galvanised steel plate

• The radial impeller, with backward-curved blades, is made from high-strength aluminium.

• The design causes the waste air to be blown through the V-housing in a vertical jet, far above the roof

All roof ventilators are supplied ready to connect, with inspection switch