S1 Series cartridges are manufactured from a pleated cellulose media and are designed for general water filtration purposes.
If the items in your order qualify for 'Free Shipping' and total $75.00 or more, your order ships FREE* and is applied to your cart at checkout! Order under this amount will be charged flat rate shipping of $14.95.
Learn more about our shipping policy to Alaska, Hawaii, and International shipping here.
*Free shipping to the Contiguous United States. (Lower 48 states only. Does not include Alaska or Hawaii.)