Four USA-made instapure R10J replacement filters, compatible with multiple models. - Brand: instapure - Model: R10J - Compatible models: F2, F3, F5, F6, F7, F10J - Filter type: Replacement filter - Country of manufacture: USA This is an older item. Please confirm the model of your water purifier before purchasing. Thank you for viewing. Please note that this item is also listed on other sites, and priority will be given to the first person to purchase.