Storage Tank Fill Opening Diameter 12 in Graduation Mark Increments 0.5 gal Liquid Storage Capacity 5 gal Overall Diameter 12 in Overall Height 15 in Standards NSF/ANSI/CAN 61 Certified Tank Material HDPE Tank Material Thickness 1/4 in Tank Opening Type Open Top Maximum Operating Temperature 140 Degrees F Color Natural Fill Cap Diameter 16 in Maximum Liquid Temperature 140 Degrees F Shape Round Tank Orientation Vertical Tank Wall Style Single Wall