New Biorb replacement filter tube

New Website states It is suitable for biOrb CLASSIC 15, TUBE 15, HALO 15, and FLOW 15 (4 gallon) aquariums. It also fits biOrb CUBE 30 (8 gallon) aquariums. I have a Biorb Tube 15 but it’s an older series I think it’s an original so it’s just a little bit too tall for tank.