Storage Tank Fill Opening Diameter 16 in Liquid Storage Capacity 220 gal Overall Diameter 48 in Overall Height 48 in Standards NSF/ANSI/CAN 61 Certified Tank Material LLDPE Tank Material Thickness 1/4 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