Used 26000 gallon stainless steel silo. Manufactured by AO Smith. 3480 cu ft. Compacted density 32 PCF. Designed for Funnel flow loads. Max operating 2 oz/sq in. Vac 0.5 oz/sq in. 12'D x 40'OAH. 79"cone @ 48 deg. Built 2000. Past use plastic pellets.