UniFlow Laboratory Fume Hoods are the most complete line of fume hoods in the industry. UniFlow AireStream low flow high performance fume hoods feature an exclusive all composite resin construction that is chemical resistant, flame retardant, lightweight, and meets UL 1805, SEFA 1, ASHRAE 110, and ANSI Z9.5 standards. These hoods have a molded one-piece seamless composite resin interior fume chamber that has all coved corners and is white for superior light reflectivity.