Pack of 1 filter by IPW Industries Inc. These filters are compatible 10" x 4.5" Full Flow String Wound 5 Micron Filters. They are compatible with the Campbell water systems. The Campbell brand name and logo are the registered trademarks of their respective owners. Any use of the brand name or model designation for this product is made solely for purposes of demonstrating compatibility. Additional Details ------------------------------ Product description: Pack of 1 filter by IPW Industries Inc. These filters are compatible 10" x 4.5" Full Flow String Wound 5 Micron Filters. They are compatible with the Campbell water systems. The Campbell brand name and logo are the registered trademarks of their respective owners. Any use of the brand name or model designation for this product is made solely for purposes of demonstrating compatibility.