Description: 【Three-Sided Design】Transparent filter box adopts three sided design, aquarium corner internal filter is designed to fit snugly into the corner of your fish tank, making full use of space while providing efficient filtration. 【Stylish and Functional】Partition filter tank corner sand baffle acts as a barrier, preventing sand and gravel from entering the filtration area, thereby prolonging the lifespan of the filter pump and ensuring the cleanliness of your tank. 【Easy to Install】Featuring a multi-layer design, Aquarium Tank Corner Filter is easy to place and arrange in your tank, requiring a hole to be opened at the back of the tank for use. 【Reliable and Durable】The filter box is made of thick transparent acrylic material, allowing you to observe the interior condition of the filter clearly. 【Enhance Your Aquarium】These fish tank accessories are ideal for creating and DIY aquarium landscapes, suitable for both aquatic and rainforest tanks. Specification: Material: Acrylic Size Chart: 2 Layer Size: 10.5cmx18cm/4.13inchx7.09inch Or 3 Layer size: 10.5cmx23cm/4.13inchx9.06inch Or 4 Layer Size: 10.5cmx28cm/4.13inchx11.02inch Package Includes: 1 Set Aquarium Fish Tank Filter (As your choose) Note: Please allow slightly errors due to manual measurement and different monitors.