Tandem louvre dampers

• Two dampers in one (a real alternative to a double louvre damper)
• with sealing air 100% lock as per UVV/TRD
• High impermeability with flexible stainless steel seal (short seal length)
• very little pressure loss (flow-through damper vane in standard steel constructions – lattice works / no built-in bridges)
• good controllability
• Number of vanes, bearings, levers and connecting rods only 50% as compared to double louvre dampers
• Short overall length (little adjustment and maintenance work required)
• Possible use as fast opening / fast closing safety damper (regulating time < 5 s)