Brand New Replacement Filters for Maytronics Dolphin pool cleaners. Fits the following models Aquarius XL, Bio, C3, C4, M200, M400, M500, Nautilus CC Plus, Oasis Z5, Oasis Z5i, Sigma, Supreme M4, Supreme M5, Triton Plus, Wave 60, Wave 65, Wave 80, & Wave 90. It is not compatible with Nautilus (old), Nautilus CC, Triton, Triton PS, & Triton PS Plus. The set includes 4 filter panels & is certified by Maytronics as a genuine part, ensuring top performance for your pool cleaner.