DescriptionIf you are looking for a professional and affordable refillable fish tank filter box, then your research is over here. That's because our product can meet your need. Adopted of premium material, it is practical and durable for long time use. It is not easy to get deformed and bring you much convenience.Features-Color: Green -Material: plastic -Size: 24.20X8.50X6.00cm/9.51X3.34X2.36in - Made with high-quality materials, safe and environmental protection. - The bottom tray can be extended and retracted, the adjustment range is 24-41cm. - You can add filter materials by yourself, the filter effect is better. - Comes with filter cotton, it can catch larger particle. - Suitable for various aquariums, ecological tanks, breeding tanks, radiography tanks, semi-water landscape tanks, etc.