For all DELTA 30 type fume hoods Exhaust air volume is controlled according to the free inflow area, both with vertical, horizontal or combined front sash opening as well as side sash opening Energy savings and increased safety at work without compromising ease of use System solutions for achieving optimal room air balance Controlled electrically or pneumatically Fast electronic control with full integration into building process control technique, via LON bus technology or conventionally via analogue signals Direction sensitive inflow sensor ensures constant laminar flow conditions and automatic discharge of thermal loads in the interior of the fume hood Vmax switch for increasing exhaust air volume in the event of an emergency, particularly with the front sash closed Real system solution, in which all exhaust air, inlet air, drive, and control components are matched to each other Automatically closing front sash for increased protection and safe realisation of the planned room air balance, with movement detector and options such as foot-operated switch and light barrier available as optional extra