✅ 4-Stage Filtration: Multi-layer system includes sediment, pre-carbon, RO membrane, and post-carbon filters ✅ Standard 5-Inch Size: Fits most 5-inch RO systems; please verify your unit’s compatibility before purchase ✅ Durable Materials: Made with high-quality, food-grade components for consistent filtration ✅ Tool-Free Installation: Quick and easy to replace without special tools ✅ Complete 1-Year Set: Includes all filters needed for one year under normal use?Please note that for returns with torn packaging, the shipping cost will be deducted from the refund amountPlease note that for returns with torn packaging, the shipping cost will be deducted from the refund amount?Please note that for returns with torn packaging, the shipping cost will be deducted from the refund amount.