*Available in variants as listed below*
STA1200: S7M 120 sq/ft system 3 cartridge filter
STA400: S7M400 System 3 mod cartridge filter
STA1500: S8M 150 sq/ft cartridge
STA500: S8M500 cartridge filter
STA150SRF: Small replacement filter for S8M150 filter
STA150LRF: Large replacement filter for S8M150