Thor Kitchen 9-inch Water Filter WF2009 inch Thor Kitchen Water Filter WF200 Product Details For the Thor Kitchen Refrigerator, Model: TRF3601FD, this is the corresponding water filter that should be replaced every 6 months. Features: Reduces impurities for cleaner, fresher water Last up to 6 months or 200 gallons For use on model TRF3601FD to filter ice and water system Specifications: Minimum operating temperature: 1C 34 F Maximum operating temperature: 38C 100 F Minimum working