Item Filter Silencer, Connection Style Screw On, Design Hood, Filter Material Polyester, Filter Rating 5 micron, Filtered Substance Particulate, Filtration Efficiency 99 Percent, Housing Material Carbon Steel, Maximum Flow Rate 520 cfm, Maximum Operating Temperature 220 Degrees F, Minimum Operating Temperature -15 Degrees F, Nipple Length 4 in, Number of Air Outlets 1, Outlet Size 4 in, Outlet Type MNPT, Outside Diameter 16 in, Overall Height 14 in, Series FS