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