Keep coffee warm while brewing another pot with the Grindmaster - B-3 - Precision Brew® Automatic Coffee Brewer. With one warmer below and two on top of the brew basket, the reliable B-3 brewer has room for three decanters at a time to have a hot supply on hand whenever you need it. The Grindmaster Precision Brew® Automatic Coffee Brewer (B-3) can be set so that the warmers turn off after 240 minutes from the last brew cycle in order to conserve energy. The brewer is NSF certified and can hold b...