316l stainelss steel construction. Mixer no. 1140-2600-15. Job no. 920977. Manufactured bykoch-glitsch, inc., wichita, kansas. These units contain 2 internal mixing elements and flow direction is indicated on the id tag. Units have 8 bolt 150 lbs flanges with 9.5" diameter bolt circle. Overall length is 18 - 13/16" flange to flange.