This Insignia NS-WP508531 NSF 53 water filter replacement is designed for use with Whirlpool refrigerators and is capable of removing lead, cysts, benzene, and other harmful contaminants from household water. Each pack contains a single filter with a capacity of 300 gallons. The filter is made of durable plastic material and is white in color. This replacement water filter is compatible with several Whirlpool refrigerator models, including GD5NHAXMB00, ED5GHEXNL00, GS6SHAXMS00, KSCS25FJSS01, KSRB25FHSS01, KBRC36FMS01, GS6SHEXNS02, KSSC36QMS01, ED25QFXHW00, GS6SHEXML00, and many more. It is suitable for household use and is a great choice for those who want to ensure that their drinking water is safe and free from harmful contaminants.