This product has been discontinued by the manufacturer. This is the smallest filter we have now.  Bunn WEQ 56000.0024 Single Water Filtration System for Low to Medium Volume Applications - 10,000 Gallons

Bunn # 30201.0001 WATER FILTER, ED-17-TL 12/CS Designed for one or two .5 gallon coffee brewers. They also work well with BUNN HW2 hot water machines. Provides 1,500 gallons of superior sediment, taste/odor and chlorine reduction @ .5 gpm. 5 micron graded density filtration for long life. Perfectly sized to ensure quality coffee and long-term performance of 1 to 5 pot brewers (up to 15 lbs. of coffee/week). Special scale inhibitor provides six months of scale reduction and guards against corrosion.

Comes 12 to a case. UPC 072504052397