One of the larger European ventilation manufacturers, producing from a hundred-thousand-square-metre site in the Black Forest. Its axial, high-pressure, roof-mounted and duct-mounted smoke extract fans are tested to DIN EN 12101-3 in the F300, F400 and F600 temperature classes and CE-marked under a notified body. The same portfolio covers impulse jet fans for car park ventilation and smoke clearance, and Rauchschutz-Druckanlagen and stairwell purge systems with matching controls.