LTWHOME Compatible Polyester Filter Pad Non but Suitable for Fluval U2 Filter (Pack of 50) Polyester Filter Pads : 10mm Thick Approx size:130mm x 60mm x 10mm After market product,Not Hagen FLUVAL genuine Suitable for Hagen Fluval U2 Filtration Systems Fine Filter Medium Maintains Crystal Clear Water Aquatic Grade Polyester