The Penguin Series A-SF in-tank suction filtration systems are constructed from CPVC, Polypro, or PVDF with no metal contact. They are corrosion-resistant and designed for continuous-duty operation and virtually trouble-free service. Series A-SF is available in two styles with one or two filters. A choice of filter cartridges is available. Series PF standard string-wound filter cartridges for particulate removal, or Series GC granular carbon for removing organic contaminants. Series A-SF filtration systems are easy to install and maintain, offering filtration rates up to 3400 GPH.