A1390 Size: 20 (5-20 Gallon) Features: -Filter. -Offers powerful biological filtration. -Tailored fit prevents bypass. -Traps particles and debris. Product Type: -Biological. Pet Category: -Fish. Color: -Greens. Generic Specifications: -Designed to fit the AquaClear 70 Power Filter. Generic Dimensions: -20 5.1'' H x 2.8'' W x 2.5'' D. -30 5.1'' H x 3.8'' W x 2.3'' D. -50 4.9'' H x 5'' W x 2.5'' D. -70 5.5'' H x 6.6'' W x 3.8'' D.