Zero Smog 4V Kit 1 funnel Portable volume extraction unit for 2 workstations with filter H13 and wide band gas filter (50% activated carbon/50% Chemisorb) fine dust filter F7 max. capacity 4 workstations: 536.606.99 Zero Smog 4V 536.571.99 2x KIT 1 WF funnel for volume extraction, incl. set for table mountingfor 2 workstations