Storage Tank Closed Top Vertical Double Wall Tank (Gal.) 120 Dia (In.) 33-3/4 Height (In.) 51-1/8 Tank Bottom Dia (In.) 31 Fill Opening Dia (In.) 12 Connection (In.) 2 Fitting Type Polyproylene Wall Thickness (In.) 1/4 nominal Tank (L) 454 Max Working Pressure (PSI) Atmospheric Construction Material High Density Polyethylene Max Temp (F) 100 Agency Compliance CFR 40-279.22 Features Tank-In-A-Tank System Providing 120 Percent Containment And Level Indicator