Storage Tank Fill Opening Diameter 16 in Liquid Storage Capacity 500 gal Overall Diameter 61 in Overall Height 66 1/2 in Standards NSF/ANSI/CAN 61 Certified Tank Material LLDPE Tank Material Thickness 3/8 in Tank Opening Type Closed Top Maximum Operating Temperature 140 Degrees F Color Blue Fill Cap Diameter 18 in Maximum Liquid Temperature 140 Degrees F Number of Caps 1 Shape Round Tank Orientation Vertical Tank Wall Style Double Wall