Program AIR CONDITIONING Air distribution Ventilating grilles and Valves Circular and square ceiling diffusers Swirl diffusers Variable swirl diffusers Slot diffusers, Duct diffusers Air displacement units Supply air nozzles Air volume regulation Protection louvres Supply air/Exhaust air towers Overpressure dampers Volume control dampers Throttling dampers, Shut-off dampers, Non-return dampers Sound attenuation Rectangular and circular sound attenuators Circular sound attenuators (MDZ) Acoustic grilles Program SPECIAL PRODUCTS AND SERVICES Thin sheet-metal processing Various products from thin sheet metal Surface protection - powder coating Program FIRE PROTECTION Fire protection technique Rectangular and circular fire dampers Fire valves Smoke dampers Program CLEAN ROOM TECHNOLOGY Absolute air filtration Duct pre-filters Absolute filter housings Perforated supply ceilings Program ENERGETICS Heating and cooling Fan coils Floor convectors: natural and forced convection SUPPLEMENTARY program Products of other manufacturers Compact water coolers Flow rate controllers Fire valves Weiss Klimatechnik GmbH - Clean room systems