Storage Tank Fill Opening Diameter 8 in Liquid Storage Capacity 40 gal Overall Diameter 22 in Overall Height 42 1/2 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 10 in Maximum Liquid Temperature 140 Degrees F Number of Caps 1 Shape Round Tank Orientation Vertical Tank Wall Style Double Wall