Wide neck version NAC6 Dimensions: 6.7" x 10.4" x 19.6" (L*W*H) Cylinder: 6" Pump: ATMAN PH2500 110V 27W Air intake: 500 LPH Capability: Light Bio-load: 150 Gallons Medium Bio-load: 125 Gallons Heavy Bio-load: 90 Gallons