In- Fish Tank External Filter Acrylic Filter Dry and Wet Separation 3 in 1 Small Silent External Suspend Aquarium Drip Overflow Box Product Type: Water Purifier Specification: 2 boxes of upgraded version (without water pump), 3 boxes of upgraded version (without water pump), 4 boxes of upgraded version (without water pump), 5 boxes of upgrades (without water pump) 6 boxes of upgrades (without water pump) Model: 2/3/4/5/6 grid Suitable tank thickness: 1cm/0.39in or less (approximately) 2 box size: 15x7x8cm / 5.9x2.75x3.14 inches 3 box size: 21.7x7x8cm / 8.54x2.75x3.14 inches 4 Box Size: 28.3x7x8cm / 11.14x2.75x3.14 inches 5 Box Size: 38.4x7x8cm / 15.11x2.75x3.14 inches 5 +1 box size: 38.4x7x8cm / 15.11x2.75x3.14 inches 5 boxes (widened) Size: 45.1x10x10.6cm / 17.75x3.93x4.17 inches 6 Box Size: 45x7x8cm / 17.71x2.75x3.14 inches Material: Acrylic 1 The hook installation is upgraded to screw installation, you can change the direction of the left and right water inlet and outlet by installing the hook in front and back, and you can also let the water flow down the tank wall to achieve a mute effect! Increase the water outlet, 3.3cm long and 1cm wide, can be placed Drainage sheet, improve the waterfall effect! The following are 5+1boxes (dry and wet separation boxes) The left and right direction of the water inlet and outlet can be exchanged If you need to get water in from the right side and out from the left side, you can remove the fixing screws on the left and right, and change the direction of the hook. Suitable for 0.6-1 cm inner fish tank wall. The following is the ordinary filter box High-quality acrylic material, selected acrylic material, each board is 0.55cm thick Transparent design-filtering visual new sense, fresh, transparent and visual perception, the filtering effect can be seen, let you experience a different aquarium life Variety of options in different sizes The materials in the filter box are equipped with acrylic water pipes, volcanic stones, coral stones, bacterial rings, and filter cotton. The pictures are for reference only, and the actual receipt shall prevail The acrylic water pipe is about 15cm long and the leather pipe is 30cm long Hanging type, suitable for fish tank walls with a thickness of 3 to 8 mm. The plug-in isolation plate can be inserted or inserted. The tank has a 3.5cm waterfall-shaped water outlet. The upper gap is reserved to prevent the outlet of the lower tank from being blocked. Hanging type, suitable for aquarium walls with a thickness of 3 to 8 mm Plug-in isolation board is removable The lower tank has a 3.5cm waterfall outlet The upper gap is a full overflow reserved for preventing the outlet of the lower tank from being blocked