Perfect for tea and coffee that require exact brewing. Fits iced tea brewers and 1.5 gallon urns. Fit most commercial BUNN® coffee brewers. Coffee Maker Size: 1.5 gal; For Use With: BUNN® Tea Brewers, Single & Dual Coffee Brewers, 1.5 gal Urns, ITCB, System II; Material(s): Paper; Shape: Flat Bottom.