In-Line Water Hose Filter - HL-180 is compact and portable, with easy in-line attachment. Just attach the 11 inch length x 2-1/2 inch diameter filter to your fresh water hose. Use it in your city water connection or when filling your fresh water tank. Standard garden hose connection with no tools needed. Use for one year, then replace. Has a working pressure of 20-125 psi and 2 gpm maximum flow rate. The versatile exterior water filter holder will work with HL-180 inline or HL-200 filter kits simply by turning the holder over.