The 5 Lb. Aluminum CO2 Tank is a great size that fits in almost every refrigerator, plus it is still small enough to take on the road. This tank will usually carbonate and dispense 10 or 12- 5 gallon kegs per fill up.
Diameter: 5.5" Height: 18.25" PSI: 1800 Valve: CGA-320 Good for 5-7 Kegs