Labnics Ductless Fume Hood differs from traditional ducted models by using air filters instead of external ventilation. It operates with an airspeed range of 220 to 1200 cubic meters per hour, features a durable 12.7-millimeter worktop, and maintains a low noise level of 50 decibels. https://www.labnics.com/ductless-fume-hood/ndfh-200