Storage Tank Drain Connection Gender Female Drain Connection Type TxT Drain Opening Diameter 2 in Fill Opening Diameter 18 in Frame Material Not Applicable Graduation Mark Increments 25 gal Liquid Storage Capacity 360 gal Overall Depth 53 in Overall Diameter 53 in Overall Height 59 in Overall Width 53 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