GE Dual Stage Drinking Water Replacement Filter (VOC) - FXSVCProduct Description Lasts 6 months or 600 gallons These dual stage water filters work to keep sediments and chemicals out of your home drinking water so that you can enjoy drinking and cooking water with more flavor and less of the bad stuff. When you receive your filters, start with inserting the filter with grey caps (sediment pre filter) first. Lasts 6 months or 600 gallons (may vary depending on local water conditions). Then after six months,