Feature: 1. Made of high grade acrylic material, beautiful and durable, high light transmittance. 2. With overflow box guide protection comb, can make the water evenly dispersed, and can prevent fish, water plants and other debris into the overflow box. 3. With movable cover at the overflow box outlet, effectively reduces noise and prevents debris from entering the overflow box. 4. Outlet pipe has check valve, can be pumped through the attached syringe, quickly exhaust the interior of the first overflow box, easy to start the overflow box. 5. Overflow box attached to the edge of the fish tanks and connected to the filter system at the bottom of the fish tanks. After starting the overflow box, the water in the aquarium can be pumped to the aquarium through the action of the circulating water pump, and then flowed through the overflow box to the sump, so that the circulation process of the aquarium can be easily realized without turning the hole at the bottom of the aquarium. Specification: Condition: 100% Brand New Item Type: Fish Tanks Overflow Box Material: Acrylic Color: Red Flow: 5000L/H Weight: Approx. 2663g Overflow Box Size(LxWxH): Approx. 26.5x18.2x28.6cm/10.43x7.17x11.26inch Overflow Comb Length: Approx. 22.5cm/8.86inch Water Outlet Loose Joint Diameter: Approx. 32mm/1.26inch Product Introduction: The overflow box is attached to the edge of the fish tanks and connected to the filter system at the bottom of the fish tanks. After starting the overflow box, the water in the aquarium can be pumped to the aquarium through the action of the circulating water pump, and then flowed through the overflow box to the sump, so that the circulation process of the aquarium can be easily realized without turning the hole at the bottom of the aquarium. . Package List: 1 x Overflow Box1 x Overflow Comb1 x Needle Tube4 x Screw1 x Air Pipe1 x Set of Bottom Connector(4PCS)1 x English Manual