Aluminum grade 5052 construction. 12' diameter x 25'- 4" straight side. 60 deg bottom cone. Flanges on top for two large bin vent filters. Ring lug mounted for setting in structural steel. Four 8" tangential entrys. 1'- 5-1/2" i.D. Flanged outlet. The silos have different size outlets. 24" manway on top. Access door on lower side. Sidewall varies in thickness from 0.190" to 0.313". Rated for seismic zone 1, weight is 5120 lbs. Drawings on file.