DONALDSON TORIT WSO 10 STRAIGHT OIL CARTRIDGE $390.15 DONALDSON TORIT WSO 15 STRAIGHT OIL CARTRIDGE $700.40 DONALDSON TORIT WSO 20 STRAIGHT OIL CARTRIDGE $734.40 DONALDSON TORIT WSO 25 STRAIGHT OIL CARTRIDGE $929.90 DOWNFLO EVOLUTION (DFE) ULTRA-WEB FR CARTRIDGE $268.85 DOWNFLO EVOLUTION (DFE) ULTRA-WEB CARTRIDGE $227.05 DONALDSON TORIT VH ULTRA-WEB POWERCORE FR $668.10 DONALDSON TORIT VH ULTRA-WEB POWERCORE $592.45