Features: brand new and high quality Made of high-quality materials, it is sturdy and durable. Double fixing, can be installed on one side or at right angle. Suitable for most aquariums with different wall thickness, with water level adjustment function. Small size, easy to store and carry, no drilling required, easy installation. There is an internal interface that can be connected to the trachea exhaust, which is silent. Specifications: Material: Plastic Size: As Shown Package Includes: 1x Auto Water Filler 1x Adapter note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.