The new type slot diffuser VSD50-1-LT is now available. This adjustable slot diffuser is designed for use in light partition walls and available as simple slot diffuser for either supply or extract air and as dual slot diffuser for both supply and extract air. The VSD50-1-LT consists of a plenum box with integrated cross-talk sound attenuation, the air entry spigot and the single-slot diffuser face. For details please refer to leaflet no. T 2.1/3/EN/1. Further information about cross-talk sound attenuation can be found in the special print (in German) HLH 8/2005 www.hlh.de.