Frame: galvanized steel Filter media: micro glass fiber paper Separators: continuous thermoplastic cord Sealant: polyurethane Gasket: closed cell neoprene EN 779 class: H10-H14 0.3μm D.O.P. efficiency: 95-99.999% Final pressure drop:(recommended) 500 Pa - (maximum) 600 Pa Maximum air flow rate: in order to retain their efficiency characteristics these filters must not exceed the rated capacity Max. operating temperature: 60OC Max. relative humidity: 90% RH Special sizes: on request