Storage Tank Drain Connection Gender Not Applicable Drain Connection Type Not Applicable Drain Opening Diameter Not Applicable Fill Opening Diameter 18 in Frame Material Not Applicable Graduation Mark Increments 25 gal Liquid Storage Capacity 275 gal Overall Depth 47 in Overall Diameter 47 in Overall Height 59 in Overall Width 47 in Standards ASTM D1998 FDA Compliant 177.1520 NSF/ANSI 61 Tank Material HDPE Tank Material Thickness 3/16 in Tank Opening Type Closed Top