Dolphin 9995430 Replacement Micro Extremely Fine Particles Filter Bag extra heavy duty cloth Standard cloth filter bag used for various Maytronics Dolphin robotic cleaners Washable filter bag These bags are for the Dolphin 3001, 2X2, HD, 2002, DX5, DX5 PLUS, PROX 2, Sprite, WAVE 50 and WAVE 100 and Advantage cleaners only Approximately 17 inches x 24 inches when laid out