Benchvent glue spray air filtration units benchvent bv300s the benchvent air filtration system bv300s is capable of filtering 325msup3hr of air and is designed to be an occasional spray trap for studioworkshop cleanliness and operator protection from concentrations of airborne contaminantsthe spray booth has two filters a particulate intake filter and a carbon impregnated fibre filter the particulate filter is a 3 stage graduated fibre filter with a high dust holding capac