A490 Compatible Model: With U2 Filter Features: -Filter. -Provides effective chemical filtration. -Filters out fine debris and contaminants. -Help keep your aquarium healthy and clean. Product Type: -Chemical/Filter Cartridges. Pet Category: -Fish. Generic Dimensions: -U2 Weight: 0.07 lb. -U2 3.38'' H x 2.36'' W x 0.59'' D. -U3 Weight: 0.1 lb. -U3 3.38'' H x 2.36'' W x 0.59'' D. Dimensions: Overall Height - Top to Bottom: -3.38 Inches. Overall Width - Side to Side: -2.36 Inches. Overall Depth - Front to Back: -0.59 Inches. Overall Product Weight: -0.42 Pounds.