CAL Aqua Labs 17mm Efflux F3 Outflow
The Efflux F3 has a 17 mm tube diameter for 5/8" tubing and holds two suction cups for enhanced stability. The width between the arch is approximately 6 cm. The F3 is suitable for aquariums 30 gallons and larger that use 5/8" tubing for the canister filter outflow. Each F3 pipe is supplied with two removable suction cups.