Fits in the following water filter housings : Culligan HF-150, HF-160, HF-360, American Plumber W5CIP, AquaPure, Ace,Bruner, Fulflo, Flotec, General Electric, Honeywell, OmniFilter (OB1, OB5, U24, U25), Sears, Sta-Rite TO1-DS, Teledyne Water Pik, Master Plumber W34-PR and other brands compatible with 9.75 x 2.5", 5 Micron Taste & Odor Water Filter. 

The Omnifilter TO1 is identical to Ametek C-1, Culligan C1 (155002-32 ), USFilter C1, Pentek C1, American Plumber C1 (155002-52 ), Plymouth Products C1 and Kleen Plus C1, OmniFilter TO1, T01 SS and TO1 DS.  
Features:

• Well suited for a wide range of residential applications
  
• Dual-purpose cartridge - Filters out fine sediment partials and reduces unwanted taste, odor and chlorine from your tap water
  
• A polyester reinforcement backing and external netting provide additional strength and dirt-loading capacity
  
• Nominally rated at 5 microns
  
• Make excellent polishing filters when used in process or closed-loop streams