Ductless Fume Hood NDFH-200 also known as fume cupboard differs from the traditional ducted fume hood as it relies on HEPA filters to filter out contaminated air and redirect the purified air back into the workspace. Equipped with universal wheels and a ductless system, it is a portable unit with no cumbersome exhaust installations. These fume hoods provide safe, negative-pressure work environment and effectively control exposure to hazardous, corrosive or toxic chemicals thus ensuring personnel protection.