http://www.micromatic.com/draft-keg-beer-edu/dispensing-keg-beer-cid-2641.html http://www.micromatic.com/direct-draw-draft-beer-system-aid-121.html A Direct Draw Beer Dispensing System is a self contained, thermostatically controlled refrigeration unit, in which one or more kegs of beer are stored at an optimum temperature of 38 F. This system is equipped with beer dispensing hardware and 3/16 inside diameter (I.D.) beer line that can be used exclusively between the keg coupler and faucet. aid-121