This commercially-rated unit brews up to 3.8 gallons (14.4 liters) of perfect coffee per hour Internal components are constructed from stainless steel Pourover brewer requires no plumbing '' just pour cold water in top and coffee brews immediately Three separately controlled warmers Brews into 3 Bunn commercial ''regular'' or ''decaf'' decanters (models 6100 or 6101 - not included)