The Weller ZEROSMOG4V 0053660299 is a 120V, ESD Vol Fume Extraction Unit with a Built-In Turbine and Pre-HEPA-Gas, Max 4 Ports/Stats, that purifies air at up to 4 workplaces. The ZEROSMOG4V features a maximum extraction rate 230 m3/h, quick and simple installation, noise dampened metal housing, adjustable pressure control that optimizes air flow regulation for each work place, and includes F7 fine dust pre-filter and compact filter with 50% H13 HEPA filter and 50% Chemabsorb.