Acro 37 TF Vent Device Disposable. PTFE membrane polypropylene housing have broad chemical compatibility. 0.2um membrane pores. 37mm diameter. 7.5cm2 filtration area. 6.4-9.5mm hose barb connectors. 100[degree]C max operating temperature. 60psi max pressure. Bidirectional. Nonsterile. 24/pk.