Beckett Bio Filter Replacement PadThe Beckett Replacement Pad is pre cut to fit all Beckett Bio Filters. Made from reticulated foam material, with a coarse and fine pad to use in tandem, it helps establish a proper biological balance and enhance water quality in your pond. Pre cut to fit Beckett bio filters BF350, BF700 and BF1100 Includes 1 coarse and 1 fine reticulated foam pad to use in tandem Makes for efficient filtering and easy cleanup