Omnifilter RS5-SS String Wound cartridges are suitable for a wide variety of sediment filtration applications, including municipal and well water as well as many industrial fluids. The cartridges are wound in a precise pattern around the core providing greater surface area. The result is higher dirt-loading capacity and greater efficiency than standard wound cartridges.   
Features:

• Durable string wound construction
  
• General purpose filter for whole house applications
  
• Sediment reduction including sand, silt, scale particles, and rust particles
  
• Ideal for well water applications
  
• Fits the Omnipure filter housings OB1, U25, and OB5.