Features: Plastic air curtain is the new type air divider with new structure. The plastic air curtain made of environmentally-friendly material is durable and nontoxic,and can be used for all kinds of aquarium. When using the plastic air curtain,please connect the inlet air tubing to the end of the plastic air curtain in L shape. The inlet air tubing can be also connected to the middle of the plastic air curtain in for T shape. You can also connect the air curtain to the desired length to change the air outlet number and the air outlet range. The suction cup can be used to dix air curtain on the desired location in the aquarium. The plastic air curtain can be circumroatated to adjust the air flow direction. It is easy to adjust it and it can give the fish a nice environment. Air Curtain only,other accessories demo in the picture is not included! Specifications: Material: Plastic Length of a single bubble bar: 10.5cm/4.13'' Color: Clear Quantity: 1 Set Package Includes: 6 x Bubble bar (No retail package) 3 x Sucker 2 x L Shape Adapter 1 x Cover note: 1.Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!