Ultra Fine Cartridge Filter Panel for DOLPHIN M400 M500 Maytronics Part Number: 9991432-R4 Product Description: material: plastic Color: white and black Dimensions: 11.9 x 10.2 x 2.3 inches Compatible with: Replacement filters can be used with the following Dolphin robotic pool cleaners: Nautilus CC Plus, M400, M500, Sigma, Odyssey, Oasis Z5i, Triton Plus (old), Aquarius XL, C3, C4 Maytronics Part Number: 9991432-R4 Maytronics Certified Genuine Part. Keep Your Dolphin Pool Cleaner in Top Condition Products include: Please choose a combination according to your needs. Note: Lighting and different monitorsmay cause the color of the item in the picture to be slightly different from the actual item. Please allow +/- 1-3 cm measurement error. _x000D_