HQRP 5-Pack Flat Box Filter Pads for Tetra 19015, SF1 / 26592, Coarse & Fine Pads Coaster HQRP&reg; 5 pack Black and Blue Foam Filter Pads Replacement + HQRP&reg; Coaster; Coarse and Fine foam Pads for removing debris and prevention pump from clogging; The pads are used in SF1 Submersible Pond Flat Box Filter for FK5 / FK6 Filtration Fountain Kits; Measures 9 1/2" x 2 3/8" x 12 1/4"; 100% Compatible with Original filter. 2 weeks DOA replacement warranty!