Comprehensive Compatibility: Perfectly fits models 303909, C-4326, 8172500, FC-2375, M-4326, R173429, ensuring a versatile use across multiple spa systems. Optimal Filtration: Designed to provide crystal clear water and efficient debris removal, enhancing your spa experience. Design: Crafted for and durability, withstands constant water flow and use. Easy Installation: Simple drop-in setup for hassle-free replacement and maintenance. Dimensions: Precisely crafted at 5 inches in diameter and 13 inches in length, ideal for a wide range of . Color: White Material: plastic Package Contents: 2 x Swimming Pool Filter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.