Jacuzzi, Clear Water Spa (PJW50)

The Unicel C-5301 has a closed top with a 2-1/4 inch hole on the bottom. For optimal fit and performance, verify that this filter cartridge matches the dimensions of the old filter in your spa. Filter details: Part no: C-5301 Diameter: 5" Length: 8" Top: Closed Bottom: 2-1/4" Open Media: 8 sq. ft. Filter Media: 3oz Reemay Pleat count: 56