Hydronix Empty Refillable Cartridges Hydronix Empty Cartridges 2.5 x 9.75 inch for standard 10 inch water fitler housingsCan be used with: Carbon, Resin, KDF 55/85 or any other such filteration media. Made from High Impact Polystyrene to withstand continuous usage and media changes.Features & BenefitsDurable ConstructionExcellent Flow RatePre/Post Filter MediaEnd Caps: High Impact PolystyreneHow to refill an empty DI Cartridge.Unscrew the top cap from the DI cartridge and remove the foam ring.Pour in the DI resin Slowly. Tap on flat surface to help settle the resineventually.Continue to pour and tap often, till the resin is fills below the threadedrim.Put the foam ring back on top of media, remove any excess media found on outside treading, screw the cap on back on.Place the newly filled cartridge into the RO canister and make the top that has the unscrew cap in facing towards the cap offilterhousing/canister.This Filter takes approximately 18 oz (1 pound and 2 oz) of DI Resin media to fill.We recommendthat you can refill this filter up 6 times before discarding.Shipping And Payment DetailsWe accept Paypal. You may also use your Visa, Mastercard, American Express, or Discover card through Paypal. When you are ready to pay, Simply click the "Pay Now" button at the top of the eCRATER item page to submit a secure payment through checkout. All items ship via FEDEX GROUND /USPS/UPS GROUND after 1 business day upon receiving of payment, however we are not responsible for transit time and delays. Shipping is free for 48 States. We do not inflate shipping rates, however in order to save you money we will automatically combine shipping on orders with more than one item whenever possible, this is not guaranteed for large items. eCRATER checkout automatically combines the shipping charges. Please contact us with any questions. International Customers, Please note that customs/duty/brokerage fees are your responsibility. We will provide shipping tracking numbers for all international shipments. We do not know what your customs duty are.Terms & ConditionsFor Refund or Replacement Of Parts, Must OccurWithin 30 Days, Of The Date, The Item is Delivered To You. Used Or Installed Items Are Not Returnable. Inspect Your Items & Packing Carefully Upon Delivery. If Your Item Is ReceivedDamaged Or Defective, Prior To Installation, Please Notify Use Over eCRATER Messaging As Soon As Possible Within 30 Days Time Frame, We RecommendSending Us Pictures Of The Problem To Speed Up The Process. Item Do Not Include InstallationManuals Unless SpecificallyListed In Item Details, or Description. Most Issues Can Be Resolved Over A Few Messages Over eCRATER. We Do Not Accept Returns From International Customer. For InternationalCustomers, Please Contact eCRATERGlobal Shipping Service As All Of Are International Ship Are Shipped ThroughThat Service.