Self-Bailer Replacement Filter Cartridges, Capacity 6 oz, Off Loss 7 to 10 oz, Diameter 3 1/2 in, Dimensions 3 1/2 in x 28 in, Fits Opening Size 3/4 in NPT, Flow Rate 7.5 gph, For Use With Ultratech 3FTX6, For Use With Brand UltraTech(R), For Use With Grainger Item Number 3FTX6, For Use With Mfr. Model Number Mfr. No. 9935, Indoor/Outdoor Use Outdoor, Length 28 in, Oil Capacity 0.05 gal, Substances Filtered Oil, Package Quantity 2