Our stylish hang on the tank style box is perfect for those with rimmed or rimless aquariums. These baskets are made out of PETG and are 90% infill to last a while inside the harsh conditions of your reef aquarium. Our removable base makes it easy to clean the cage and holes. This large marco algae box is 7.75x6.5x5" Tall on the outside measurements. Inside box measurements are 7.5x4x4.25" tall to inside water height. Comes in a variety of colored bases when requested to match screw colors.