Nsf/Ansi 42 Certified Element, Usa Tech. Waterdrop Tsb 3-Stage High Capacity Product Features [More filters, better taste] The three under counter water filters represent three-guard household water lines, effectively reducing rust, large particles, heavy metals and suspended solids. Furthermore, the under sink water filter can effectively reduce chlorine with WQA authority certification, improving water taste for direct drinking, coffee, or beverages. The under counter water filter doesn?t reduce TDS, but it retains natural minerals. [No leaking or cracking with highly precised technique] The under counter water filter adopts strong materials with an upgraded design. In addition, the age-resistant and freeze-resistant materials make the system twice thicker. The under sink water filter system has also passed 400 psi burst pressure, 100,000+ pulse tests at 150 psi, and static tests at 300 psi. These tests prove that the durable integral design clears up worries about cracking cases and leaking issue. [Lifespan of up to 18 months] The three filters have lifespans of 6 months, 8-12 months, and 12-18 months, respectively. This long lifespan eliminates the cost of purchasing and replacing filters every now and then. Under the premise of meeting the needs of a family of five at a go, the average daily cost is only 0.38 dollars. We help you save over 50% cost compared to buying bottled water. If you have any problems with the product, contact our 24/7 technical support without any worry! [3min installation, 3s replacement] This water filter for sinks works perfectly with 3/8? and 1/2? cold water tubes. The overall installation process does not require the help of a plumber; it is a simple DIY. With innovative push-to-connect fittings, the installation takes less than 3 minutes, with no plumbing experience. In addition, the twist-and-lock design lets you replace each filter in just 3 seconds. If you have any problems, please contact us for 24/7 technical support! [Separate water dispensers for different needs] The under sink water filer system comes with a lead-free brushed stainless faucet, where you can fill a 12 oz cup of water in 5s. In addition, you can use separate water dispensers for different purposes, especially when you don?t need purified water. For example, you can use your original faucet to wash fruits and vegetables. The under sink filter system meets your dual need for both purified water and source water. Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!