Compatible Models: Deodorizer Filter Replacement for THU6474-01/ THU6474#01 / THU6072 / S550E / C5 / C2 / SW3074 SW3054T40 / SW3056T40, Bathroom Toilet Carbon Filter High-Efficiency Filter: High-Efficiency Activated Carbon Filter , used for Fine preliminary filter hair, pet fur and helping to extend the life of the HEPA filter COST-EFFECTIVE GOODS: We recommend you replace the HEPA filter every 6 months and pre-filter every 3 months for optimal performance Easy Installation: 1.Remove the louver at the rightside of the toilet body; 2.Hold the projection of the deodorant and pull it out; 3.Mount a deodorant ; 4.Mount the louver. THU6474-01 filter is easy to be replaced without any other tools, ensuring you to replace your old filter in minutes. For optimum performan THU6474-01 Deodorizer Filter Replacement for THU6474-01/ THU6474#01 / THU6072 / S550E / C5 / C2 / SW3074 SW3054T40 / SW3056T40, Bathroom Toilet Carbon Filter Color: As Shown Material: plastic Package Contents: 4 x filters 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.