The ductless fume hood is a self-contained laboratory safety unit that filters hazardous fumes, vapours, and particulate matter using integrated carbon or HEPA filter technology before returning cleaned air to the laboratory environment. As no external ductwork or connection to the building's HVAC system is required, ductless fume hoods offer a highly flexible and energy-efficient alternative to traditional ducted systems, with straightforward installation and the ability to be repositioned as laboratory needs change.

Suitable for small-to-medium scale chemical applications, the ductless fume hood provides reliable user protection and is well suited to laboratories where structural modifications for ducting are impractical or undesirable. Regular filter maintenance and replacement are required to ensure continued filtration effectiveness, and filter selection should be matched to the specific chemical applications carried out within the hood.