The Omnipure Q5415 is a 1 micron carbon block water filter. This filter features the optional twist tap in-head valve system that automatically switches off the supply water when the body is separated from the head. This filter can be used in ice makers, refrigerators, beverage appliances, drinking fountains, under the sink and reverse osmosis systems. This filter helps remove cysts, lead, taste, odor and chlorine taste and odor. Dimensions: 2.5 " W x 8 " L Rating: 1 micron Rating Flow Rate: 0.5 GPM Max Pressure: 125 PSIG Max Temperature: 100 F : 1 year or 1000 gallons Filter media: coal. leblock with lead i Specific media reduced: chlorine taste and odor reduces cysts (cryptosporidium and odor. Giardia) Reduces Lead Size This Q Series filter is a filter and must be used with an existing Q Series head. Q Series heads are available in 1/4" quick connections, 1/4" NPT female thread, or 3/8" NPT female thread.