5"x2.5" Caravan Water Filter Housing With 1/4"NPT Ports This is a listing for a replacement housing only to fit a unit like the one in picture 3 and does not a filter, spanner or bracket which are listed separately in our store if you need them. This filtration unit has a 12 month warranty which is subject to our warranty terms and conditions and is installed with a pressure reducing valve and leak shut off device. According to regulatory standards any water filter system under constant water pressure [regardless of the brand or supplier] is required to be fitted with an AS3497 approved pressure reducing valve and back-flow prevention device. We also recommend that a leak detector shut off device is installed with any water filter and /or reverse osmosis system which is under pressure. Generally, unless specifically listed otherwise our products have a 30-day no questions asked, money back guarantee. Simply return the product to us in original condition and in any original packaging to receive a refund or replacement. Unless stated otherwise in a listing or unless you have bought an extended warranty our standard warranty on all systems and parts [not filters which are considered consumables covered under our no questions asked 30-day refund guarantee] is 12 months and covers the item for any workmanship defects if you follow the operating instructions, change all filters and consumables as recommended and the item has not been damaged due to neglect or similar reasons. The maximum recommend life of any water filter and reverse osmosis system regardless of the supplier, the installation or the system is 10 years.