Storage Tank Fill Opening Diameter 15 in Graduation Mark Increments 1 gal Liquid Storage Capacity 15 gal Overall Diameter 15 in Overall Height 25 1/2 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 19 in Maximum Liquid Temperature 140 Degrees F Shape Round Tank Orientation Vertical Tank Wall Style Single Wall