This Internal Water Filter has a special key fitted to prevent cheap copies being used in new refrigerators, manufactured after March 2009.This adaptable filter can be used in all Samsung refrigerator models on the market, to give your appliance clean, clear tasting water and ice.For best performance, this filter should be replaced every 6 months.Suitable for all models of Samsung and select models of Maytag refrigerators.Specification:• Type: WF008K • Also Known As: Water Filter Cartridge • Max Pressure: 0.86 MPA • Temperature: Max Temperature: 100F / 38°C • Capacity: 290.6 Gallons • New Wpro water filter adaptable for the Samsung Aqua-Pure water filter • Replaces new key and original designed filters • Important: For models with a filter indicator light, change the filter when the light turns red, every 6 months or if you notice a decrease in flow of water. When the filter is replaced, reset the indicator by pressing the Ice Type button and the Child Lock (or Moisture Control) button simultaneously for 3 seconds.