Compatibility: This pack of 2, 4 1/2-inch universal ceramic plates are designed to replace old generator plates and are compatible with various generators using 4 1/2-inch plates. Wide Application: Perfect for helping your generator eliminate odors in offices, factories, food processing plants, etc. High Performance & Durability: Output of up to 3500mg/h for deodorization and air purification. Boasts a long lifespan of 8000 hours for extended use, minimizing the need for frequent replacements. Easy Installation & Maintenance: Simply insert the plate into the air purifier and start. Easily removed and cleaned with water; just scrub with a brush, rinse, and dry. Plate Overall Dimensions (LxW): 4 1/2 inches x 4 1/2 inches (11.43cm x 11.43cm) Size: 11.43 x 11.43 cm Material: Ceramic and Porcelain Color: White Package Contents: 2 x Plates Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the real thing. The allowable measurement error is +/- 1-3cm.