Portion Control Coffee Grinder with 1 Hopper. Single hopper holds 9 lbs. (4.1 kg) of coffee. Portion controlled for the right amount of coffee every time. Precision burrs for consistent, commercial-quality grind. Includes optional interface to BUNN brewers for multiple batch sizes. Also accommodates larger brew funnels. Three year warranty on grinding burrs. 3/4 HP, 120v/60/1-ph, 9.4amps, NEMA 5-15P.